ChartMacro - could not initialize class org.jfree.chart.JFreeChart

[Dolo]

Hi there,

i installed the “Statistics Application” (11.10.2) on the self-hosted XWiki instance.

In the “Statistics” Application i can’t see any graph/chart in the “Current Month Activity”.
=> It shows me an error:

• java.lang.NoClassDefFoundError: Could not initialize class org.jfree.chart.JFreeChart

Before installing the “Statistics” application i recently updatet XWiki from 11.10.1 to 11.10.2,
so i can’t say if the application was working proper before.

I’ve searched for the mentioned error and found this:

XWiki

where the user “jesse bw” mentioned the same error message.
The cause of the problem seems to be the “ChartMacro”.
=> I’ve also tested the example data from “jesse bw” with the same result (error).

Does i forgot to configure something special regarding the ChartMacro?

Thanks a lot!

Best,
Dolo

More information about the system where XWiki is installed on:

• OS: Ubuntu 18.04.3 LTS
• XWiki: Version 11.10.2, installed as Debian (.deb) Package
• DB: PostgreSQL 10.10 (from XWiki .deb)
• AppServer: Tomcat9 (from XWiki .deb)
• Java: openJDK8 (8u232-b09) - installed as dependency from XWiki .deb package

[vmassol]

Hi,

@Dolo

java.lang.NoClassDefFoundError: Could not initialize class org.jfree.chart.JFreeChart

Could you paste the full stack trace please?

Thanks

[Dolo]

Hi,

thanks for the fast response.

Sure here is the full error:

java.lang.NoClassDefFoundError: Could not initialize class org.jfree.chart.JFreeChart
 at org.xwiki.chart.internal.DefaultChartGenerator.generate(DefaultChartGenerator.java:79)
 at org.xwiki.rendering.internal.macro.chart.ChartMacro.generateChart(ChartMacro.java:159)
 at org.xwiki.rendering.internal.macro.chart.ChartMacro.execute(ChartMacro.java:111)
 at org.xwiki.rendering.internal.macro.chart.ChartMacro.execute(ChartMacro.java:56)
 at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:297)
 at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
 at org.xwiki.rendering.internal.macro.html.HTMLMacro.renderWikiSyntax(HTMLMacro.java:278)
 at org.xwiki.rendering.internal.macro.html.HTMLMacro.execute(HTMLMacro.java:158)
 at org.xwiki.rendering.internal.macro.html.HTMLMacro.execute(HTMLMacro.java:75)
 at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:297)
 at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
 at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:101)
 at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:348)
 at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:221)
 at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:107)
 at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157)
 at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:270)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125)
 at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67)
 at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43)
 at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96)
 at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39)
 at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123)
 at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52)
 at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68)
 at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42)
 at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1210)
 at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1477)
 at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1431)
 at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1416)
 at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1372)
 at com.xpn.xwiki.objects.classes.TextAreaClass.displayView(TextAreaClass.java:388)
 at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:3460)
 at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:3412)
 at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:3361)
 at com.xpn.xwiki.api.Document.display(Document.java:1722)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:420)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:420)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
 at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:358)
 at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:131)
 at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:52)
 at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:286)
 at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182)
 at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58)
 at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:297)
 at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
 at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:101)
 at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:348)
 at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:221)
 at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:107)
 at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157)
 at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:270)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125)
 at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67)
 at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43)
 at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96)
 at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39)
 at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123)
 at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52)
 at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68)
 at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42)
 at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1210)
 at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1351)
 at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1300)
 at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1267)
 at com.xpn.xwiki.api.Document.displayDocument(Document.java:783)
 at sun.reflect.GeneratedMethodAccessor767.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
 at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567)
 at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)
 at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.xwiki.velocity.introspection.TryCatchDirective.render(TryCatchDirective.java:87)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
 at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:358)
 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:217)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:264)
 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:264)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:772)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:745)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:725)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:711)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
 at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2490)
 at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2468)
 at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:992)
 at sun.reflect.GeneratedMethodAccessor293.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
 at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:358)
 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:217)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:264)
 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:264)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:772)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:745)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:725)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:711)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
 at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2490)
 at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2468)
 at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:992)
 at sun.reflect.GeneratedMethodAccessor293.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
 at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:358)
 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:217)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:264)
 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:264)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:772)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:745)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:725)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:711)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
 at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2490)
 at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:179)
 at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:516)
 at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:218)
 at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
 at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
 at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:112)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:109)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
 at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
 at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
 at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
 at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
 at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
 at java.lang.Thread.run(Thread.java:748)

Best,
Dolo

[vmassol]

ok thanks, hmm it doesn’t provide more help (was looking for a “caused by”). It seems you don’t have the jfreechart jar in your xwiki instance’s WEB-INF/lib dir for some reason. That’s weird. Could you check that you have a webapps/xwiki/WEB-INF/lib/jfreechart-1.0.19.jar JAR?

[Dolo]

Hi,

just checked it seems to be there:

→ locate jfreechart

/usr/lib/xwiki/WEB-INF/lib/jfreechart-1.0.19.jar
/usr/lib/xwiki/WEB-INF/lib/jfreechart-1.0.19.xed

and

-rw-r–r-- 1 root root 1.5M Dec 30 14:26 /usr/lib/xwiki/WEB-INF/lib/jfreechart-1.0.19.jar
-rw-r–r-- 1 root root 1.4K Dec 30 14:26 /usr/lib/xwiki/WEB-INF/lib/jfreechart-1.0.19.xed

Dolo

[vmassol]

Ok, I guess someone (me if I find some time, I’m already debugging some other user-reported issue) needs to try to reproduce it on a clean XS 11.10.2. Thanks.

Note that the Stats app (https://extensions.xwiki.org/xwiki/bin/view/Extension/Statistics%20Application) is not actively supported anymore (it used to be recommended and that was dropped and it’s no longer part of the recommended extension lost). It probably still works but it’s not tested nor bugs fixed actively on it.

[Dolo]

Hi,

sure, thanks a lot for your response!

Inform me if you need some additional information.

Alright, thanks for the information about the Stats app.
-> So i will try to use it as far it won’t cause any problems

Happy new year!

Best,
Dolo

[vmassol]

FTR I’ve installed it in a clean 11.10.2 instance (Jetty+HSQLDB) and I get this page when I go to the Stats app page:

So far so good.

[vmassol]

To enable it and contrary to what is mentioned, you need to set xwiki.stats.default=1 in your xwiki.cfg file.

But it works fine for me:

[Dolo]

Hi,

thanks for testing!

I’ve already enabled the stats inside the “xwiki.cfg” file.

I think i have an overall problem with the “ChartMacro” as i face
the same error message as i just want to plot some simple chart
with example data

Best,
Dolo

[vmassol]

So several questions:

1. Are you sure that the webapp used by your XWiki instance is at /usr/lib/xwiki/? Could that be another instance?
2. Could you check that the jar is valid by doing a tar tvf /usr/lib/xwiki/WEB-INF/lib/jfreechart-1.0.19.jar?
3. Could you check your xwiki logs, especially around the startup and see if there are errors or warnings in there?

Thanks

[vmassol]

@Dolo

Happy new year!

Thanks! You too I hope you like XWiki!

[Dolo]

Hi,

1. I am not sure. I will check on monday.
2. Will also check on monday.
3. Have checked the logs, but there was only one message regarding the “chart” macro.
   Something with a memory limit (searched for it - seems not to be the cause of the problem.
   Will check the logs on monday again (after a restart of tomcat).

So i will send you the information on monday.

Yes i like XWiki! Big thanks to the developers and maintainers of this awesome project!

Best,
Dolo

[Dolo]

Hi Vincent,

i’ve checked the asked information:

1. Not sure how exactly to find this out. But searching for “webapp” on the server give following results:

   locate -b webapp

   /etc/tomcat9/policy.d/04webapps.policy
   /usr/lib/xwiki/WEB-INF/lib/xwiki-platform-velocity-webapp-11.10.2.jar
   /usr/lib/xwiki/WEB-INF/lib/xwiki-platform-velocity-webapp-11.10.2.xed
   /var/lib/tomcat9/webapps

   And

   ls -lah /var/lib/tomcat9/webapps/ROOT

   -rw-r–r-- 1 root root 1.9K Nov 11 17:05 index.html
   drwxr-xr-x 2 root root 4.0K Nov 11 17:05 META-INF

   ls -lah /var/lib/tomcat9/webapps/ROOT/META-INF/

   -rw-r–r-- 1 root root 49 Nov 11 17:05 context.xml

   INFO: I’ve configured “Short URLs” according to this How To:
   https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/ShortURLs/

2. “tar” archive seems to be broken?

   sudo tar tvf /usr/lib/xwiki/WEB-INF/lib/jfreechart-1.0.19.jar

   tar: This does not look like a tar archive
   tar: Skipping to next header
   tar: Exiting with failure status due to previous errors

   EDIT: You probably meant “jar” and not “tar”

   → Couldn’t find “jar” command on my system at “/usr/lib/jvm/java-1.8.0-openjdk-amd64/bin/”
   or “/usr/lib/jvm/java-8-openjdk-amd64/bin/”

   java -jar /usr/lib/xwiki/WEB-INF/lib/jfreechart-1.0.19.jar

   gives this message:

   no main manifest attribute, in /usr/lib/xwiki/WEB-INF/lib/jfreechart-1.0.19.jar

   Searched for solutions and looked if “jdk” is installed.
   Only “openjdk-8-jre-headless” was installed, so i additionally installed the “openjdk-8-jdk-headless” package.
   Now i could run “jar” command successfull:

   jar tvf /usr/lib/xwiki/WEB-INF/lib/jfreechart-1.0.19.jar

   jar_tvf_jfreechart-1.0.19.jar.txt (58.6 KB)

3. Restarted Tomcat and checked logfiles. No entries for “chart” (?)

   /var/log/tomcat9/catalina.2020-01-07.log

   xwiki_logfile_2020-01-07.txt (40.9 KB)

Hope this helps.

Conclusion:
EDIT: removed first conclusion because of the wrong command

Have a nice week!

Best,
Dolo

[vmassol]

@Dolo

Not sure how exactly to find this out.

Easy, you just temporarily remove JARS from WEB-INF/lib and restart xwiki and see if it still works or not

@Dolo

“tar” archive seems to be broken?

Yes sorry I meant jar and not tar

You can also do zip -tv <file name>.

Anyway I see you posted the result and it looks that the JAR is valid.

So I don’t have any idea right now.

I’d suggest you try reinstalling XWiki somewhere to try to reproduce or tell us how to reproduce. Maybe check all the config changes you’ve done compared to Xwiki standard config. start with no change, verify it works, till you find a config that makes it not work.

There’s no reason that the class isn’t found if the JAR is in WEB-INF/lib.

[Dolo]

Hi,

have tested if hte webapp used by the XWiki instance is at “/usr/lib/xwiki/”

• stopped Tomcat
• Moved all “.jar” files away from “/usr/lib/xwiki/WEB-INF/lib/”
• started Tomcat
  so Tomcat itselfs started, but not the XWiki → “HTTP Status 404 – Not Found”
• stopped Tomcat and moved the “.jar” files back → XWiki is working again
  Conclusion: Webapps are under “/usr/lib/xwiki/"

ChartMacro still dosen’t work.

The interesting thing is that if i first open the “Statistics”-Application i see another error in the “Current Month Activity” section:

Failed to execute the [chart] macro. Cause: [Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper].

Click on this message for details

java.awt.AWTError: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper
at java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:807)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:886)
at sun.swing.SwingUtilities2.getSystemMnemonicKeyMask(SwingUtilities2.java:2032)
at javax.swing.plaf.basic.BasicLookAndFeel.initComponentDefaults(BasicLookAndFeel.java:1158)
at javax.swing.plaf.metal.MetalLookAndFeel.initComponentDefaults(MetalLookAndFeel.java:431)
at javax.swing.plaf.basic.BasicLookAndFeel.getDefaults(BasicLookAndFeel.java:148)
at javax.swing.plaf.metal.MetalLookAndFeel.getDefaults(MetalLookAndFeel.java:1577)
at javax.swing.UIManager.setLookAndFeel(UIManager.java:539)
at javax.swing.UIManager.setLookAndFeel(UIManager.java:579)
at javax.swing.UIManager.initializeDefaultLAF(UIManager.java:1349)
at javax.swing.UIManager.initialize(UIManager.java:1459)
at javax.swing.UIManager.maybeInitialize(UIManager.java:1426)
at javax.swing.UIManager.getDefaults(UIManager.java:659)
at javax.swing.UIManager.getColor(UIManager.java:701)
at org.jfree.chart.JFreeChart.(JFreeChart.java:264)
at org.xwiki.chart.internal.DefaultChartGenerator.generate(DefaultChartGenerator.java:79)
at org.xwiki.rendering.internal.macro.chart.ChartMacro.generateChart(ChartMacro.java:159)
at org.xwiki.rendering.internal.macro.chart.ChartMacro.execute(ChartMacro.java:111)
at org.xwiki.rendering.internal.macro.chart.ChartMacro.execute(ChartMacro.java:56)
at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:297)
at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
at org.xwiki.rendering.internal.macro.html.HTMLMacro.renderWikiSyntax(HTMLMacro.java:278)
at org.xwiki.rendering.internal.macro.html.HTMLMacro.execute(HTMLMacro.java:158)
at org.xwiki.rendering.internal.macro.html.HTMLMacro.execute(HTMLMacro.java:75)
at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:297)
at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:101)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:348)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:221)
at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:107)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:270)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1210)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1477)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1431)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1416)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1372)
at com.xpn.xwiki.objects.classes.TextAreaClass.displayView(TextAreaClass.java:388)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:3460)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:3412)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:3361)
at com.xpn.xwiki.api.Document.display(Document.java:1722)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:420)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:420)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:358)
at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:131)
at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:52)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:286)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58)
at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:297)
at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:101)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:348)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:221)
at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:107)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:270)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1210)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1351)
at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1300)
at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1267)
at com.xpn.xwiki.api.Document.displayDocument(Document.java:783)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567)
at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)
at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.xwiki.velocity.introspection.TryCatchDirective.render(TryCatchDirective.java:87)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:358)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:217)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:264)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:264)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:772)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:745)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:725)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:711)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2490)
at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2468)
at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:992)
at sun.reflect.GeneratedMethodAccessor299.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:358)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:217)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:264)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:264)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:772)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:745)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:725)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:711)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2490)
at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2468)
at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:992)
at sun.reflect.GeneratedMethodAccessor299.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:358)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:217)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:264)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:264)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:247)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:772)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:745)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:725)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:711)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2490)
at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:179)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:516)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:218)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:112)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

After reloading the site i see again the old error message:

java.lang.NoClassDefFoundError: Could not initialize class org.jfree.chart.JFreeChart

Not sure if this information is helpfull.

Okay, i will take some time and try to find out if one of the changes made by me to the standard configuration of XWiki probably cause the error.

Have a nice weekend!

Best regards,
Dolo

[vmassol]

Hi, seems there could be some issue with the Java VM you’re using and its config. Could you try to apply what’s mentioned in java.awt.AWTError: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper · Issue #644 · microsoft/vscode-arduino · GitHub ?

Thanks

[vmassol]

Another idea is that you’re maybe on a headless system and you’re not starting xwiki in a headless way?

See https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Installation/#HHardwareandSoftwarerequirements and -Djava.awt.headless=true.

[Dolo]

Hi,

thanks for the fast reply.

I am not in the office anymore. I will try both solutions on monday and inform you about the results.

Your second suggestion is possibly the solution. I am running XWiki on an server without display.
But i actually installed the “.deb”-Package from the repo, and followed all the setps from XWiki documentation.

We will see

Best regards,
Dolo

[Dolo]

Hi,

i’ve checked for the “headless” mode.

Catalina itself seems to start without “-Djava.awt.headless=true”:

> ps aux | grep grep Djava

tomcat startup parameters

     /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Djava.util.logging.config.file=/var/lib/tomcat9/conf/logging.properties 
     -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 
     -Djava.security.egd=file:/dev/./urandom 
     -Djdk.tls.ephemeralDHKeySize=2048 
     -Djava.protocol.handler.pkgs=org.apache.catalina.webresources 
     -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 
     -Dignore.endorsed.dirs= -classpath /usr/share/tomcat9/bin/bootstrap.jar:/usr/share/tomcat9/bin/tomcat-juli.jar 
     -Dcatalina.base=/var/lib/tomcat9 
     -Dcatalina.home=/usr/share/tomcat9 
     -Djava.io.tmpdir=/tmp org.apache.catalina.startup.Bootstrap start

So the option for “headless” mode is missing as i understand (?).

I’ve configured the XWiki according to https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Installation/InstallationViaAPT/.

So i checked the configuration in “etc/default/tomcat9”:

etc/default/tomcat9

    # The home directory of the Java development kit (JDK). You need at least
    # JDK version 8. If JAVA_HOME is not set, some common directories for
    # OpenJDK and the Oracle JDK are tried.
    #JAVA_HOME=/usr/lib/jvm/java-8-openjdk

    # You may pass JVM startup parameters to Java here. If unset, the default
    # options will be: -Djava.awt.headless=true -XX:+UseG1GC
    JAVA_OPTS="-Djava.awt.headless=true -XX:+UseG1GC -Xmx4096m"
    JAVA_OPTS="-Djava.security.egd=file:/dev/./urandom"

    # To enable remote debugging uncomment the following line.
    # You will then be able to use a Java debugger on port 8000.
    #JAVA_OPTS="${JAVA_OPTS} -agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n"

    # Java compiler to use for translating JavaServer Pages (JSPs). You can use all
    # compilers that are accepted by Ant's build.compiler property.
    #JSP_COMPILER=javac

    # Enable the Java security manager? (true/false, default: false)
    #SECURITY_MANAGER=true

    # Whether to compress logfiles older than today's
    #LOGFILE_COMPRESS=1

The option for “headless” mode is set there JAVA_OPTS=“-Djava.awt.headless=true -XX:+UseG1GC -Xmx4096m” , but seems to be ignored by tomcat on startup.

The tomcat/catalina startup parameters seems to be stored in “/usr/share/tomcat9/bin/catalina.sh”.

• But in this script the option “-Djava.security.egd=file:/dev/./urandom” is not available.
• As you can see from the “ps aux” output the tomcat is using the “urandom”-Option, which is actually set in “etc/default/tomcat9”
  → which leads me to conclude that the file itself is not ignored on startup of tomcat, but only the “headless” line.

Here is the tomcat startup log from friday:
(can’t find anything what includes “headless”)

/var/log/tomcat9/localhost.2020-01-10.log.gz

/var/log/tomcat9/localhost.2020-01-10.log.gz

10-Jan-2020 18:18:50.605 SEVERE [main] org.apache.catalina.core.StandardContext.listenerStart Error configuring application listener of class [org.xwiki.container.servlet.XWikiServletContextListener]
java.lang.ClassNotFoundException: org.xwiki.container.servlet.XWikiServletContextListener
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1363)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1186)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:540)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:521)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4590)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5136)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:713)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:695)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:631)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1832)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:526)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:425)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1577)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:309)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:424)
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:367)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:929)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:831)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1377)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1367)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:902)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:423)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:928)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Catalina.start(Catalina.java:638)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:496)

java.lang.ClassNotFoundException: org.xwiki.container.servlet.SetThreadNameServletRequestListener
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1363)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1186)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:540)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:521)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4590)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5136)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:713)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:695)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:631)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1832)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:526)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:425)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1577)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:309)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:424)
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:367)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:929)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:831)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1377)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1367)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:902)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:423)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:928)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Catalina.start(Catalina.java:638)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:496)

10-Jan-2020 18:18:50.693 SEVERE [main] org.apache.catalina.core.StandardContext.listenerStart Skipped installing application listeners due to previous error(s)
10-Jan-2020 18:18:50.726 WARNING [main] org.apache.catalina.session.StandardSession.doReadObject Cannot deserialize session attribute [visitObject] for session [B272AA49A6CAD7FD60119A5BE450828D]
10-Jan-2020 18:24:57.816 INFO [http://wiki.domain.org/rest/notifications/count?media=json&userId=xwiki%3AXWiki.user1&useUserPreferences=true&currentWiki=xwiki&async=true&_=1578677097711] org.apache.catalina.core.ApplicationContext.log RestletServlet: [Restlet] ServerServlet: component class is null
10-Jan-2020 18:26:43.429 WARNING [main] org.apache.catalina.session.StandardSession.doReadObject Cannot deserialize session attribute [visitObject] for session [26A1452040D78378B56EE6E70099AECA]
10-Jan-2020 18:27:14.249 INFO [http://wiki.domain.org/rest/notifications/count?media=json&userId=xwiki%3AXWiki.wiki-admin&useUserPreferences=true&currentWiki=xwiki&async=true&_=1578677234084] org.apache.catalina.core.ApplicationContext.log RestletServlet: [Restlet] ServerServlet: component class is null

1. Do i probably need to additional specify the “-Xms” option inside the “etc/default/tomcat9” file?
2. Regarding to https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Performances/#HMemory there is also an “CATALINA_OPTS” variable, instead the “JAVA_OPTS”, but as I have learned from my research it dosen’t metter in this case (only a difference for “stop” command), right?

Thanks a lot!

Best regards & a good start,
Dolo