Error when load any page with export menu

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1

Hi every one!

I create custom jar with adding custom menu button to export menu.
For source example used Latex export.

I’ve installed using Extension manager.
Checked on versions 14.10, 15.1, 15.10.1

On all version - the same error
Help please :sob:

org.xwiki.rendering.RenderingException: Failed to execute renderer

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:287)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)

 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:843)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:805)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:792)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:747)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:739)

 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)

 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)

 at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)

 at jdk.internal.reflect.GeneratedMethodAccessor930.invoke(Unknown Source)

 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

 at java.base/java.lang.reflect.Method.invoke(Method.java:566)

 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)

 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)

 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)

 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)

 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)

 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)

 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)

 at org.apache.velocity.Template.merge(Template.java:358)

 at org.apache.velocity.Template.merge(Template.java:262)

 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:280)

 at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:321)

 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:222)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:177)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:138)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)

 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)

 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:843)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:805)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:792)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:747)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:739)

 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)

 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)

 at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)

 at jdk.internal.reflect.GeneratedMethodAccessor930.invoke(Unknown Source)

 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

 at java.base/java.lang.reflect.Method.invoke(Method.java:566)

 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)

 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)

 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)

 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)

 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)

 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)

 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)

 at org.apache.velocity.Template.merge(Template.java:358)

 at org.apache.velocity.Template.merge(Template.java:262)

 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:280)

 at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:321)

 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:222)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:177)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:138)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)

 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)

 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:843)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:805)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:792)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:747)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:739)

 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)

 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)

 at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)

 at jdk.internal.reflect.GeneratedMethodAccessor930.invoke(Unknown Source)

 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

 at java.base/java.lang.reflect.Method.invoke(Method.java:566)

 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)

 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)

 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)

 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)

 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)

 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)

 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)

 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)

 at org.apache.velocity.Template.merge(Template.java:358)

 at org.apache.velocity.Template.merge(Template.java:262)

 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:280)

 at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:321)

 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:222)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:177)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:138)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)

 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)

 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:843)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:805)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:785)

 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:771)

 at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91)

 at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85)

 at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2553)

 at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180)

 at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:612)

 at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:300)

 at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:114)

 at javax.servlet.http.HttpServlet.service(HttpServlet.java:590)

 at org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1419)

 at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764)

 at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1624)

 at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122)

 at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)

 at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)

 at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61)

 at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)

 at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)

 at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)

 at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)

 at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)

 at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)

 at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)

 at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)

 at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)

 at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)

 at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)

 at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)

 at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:210)

 at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)

 at org.eclipse.jetty.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:164)

 at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)

 at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)

 at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:506)

 at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)

 at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:578)

 at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)

 at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)

 at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1571)

 at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)

 at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1378)

 at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)

 at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:463)

 at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1544)

 at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)

 at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1300)

 at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)

 at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:192)

 at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51)

 at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)

 at org.eclipse.jetty.server.Server.handle(Server.java:562)

 at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:418)

 at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:675)

 at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:410)

 at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)

 at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:319)

 at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)

 at org.eclipse.jetty.io.SocketChannelEndPoint$1.run(SocketChannelEndPoint.java:101)

 at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:412)

 at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:381)

 at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:268)

 at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.lambda$new$0(AdaptiveExecutionStrategy.java:138)

 at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:407)

 at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)

 at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)

 at java.base/java.lang.Thread.run(Thread.java:829)

Caused by: org.xwiki.rendering.RenderingException: Failed to evaluate template with id [/skins/flamingo/menus_content.vm]

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:224)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:177)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:138)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)

 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)

 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)

 ... 186 more

Caused by: org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with namespace [/skins/flamingo/view.vm]

 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:289)

 at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:321)

 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)

 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:222)

 ... 192 more

Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'execute' in  class org.xwiki.contrib.TEST.internal.export.TEST2PDFExportUIExtension threw exception java.lang.NullPointerException at /skins/flamingo/view.vm[line 176, column 51]

 at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:308)

 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:235)

 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)

 at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704)

 at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)

 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:167)

 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)

 at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704)

 at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)

 at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309)

 at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279)

 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)

 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)

 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)

 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)

 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.directive.Block.render(Block.java:94)

 at org.apache.velocity.runtime.directive.Block$Reference.render(Block.java:181)

 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:539)

 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)

 at org.apache.velocity.runtime.parser.node.ASTStringLiteral.value(ASTStringLiteral.java:320)

 at org.apache.velocity.runtime.parser.node.ASTMap.value(ASTMap.java:84)

 at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)

 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:167)

 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)

 at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704)

 at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)

 at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242)

 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)

 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)

 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)

 at org.apache.velocity.Template.merge(Template.java:358)

 at org.apache.velocity.Template.merge(Template.java:262)

 at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:280)

 ... 195 more

Caused by: java.lang.NullPointerException

 at org.xwiki.contrib.TEST.internal.export.AbstractTESTExportUIExtension.execute(AbstractTESTExportUIExtension.java:83)

 at org.xwiki.contrib.TEST.internal.export.TEST2PDFExportUIExtension.execute(TEST2PDFExportUIExtension.java:66)

 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

 at java.base/java.lang.reflect.Method.invoke(Method.java:566)

 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)

 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)

 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)

 ... 245 more
2

you have a NPE in your code…

3

You might be getting from NullPointerException within your custom extension code at line 83 in the AbstractTESTExportUIExtension class. Thoroughly review and debug your custom extension code to rectify the NullPointerException.

4

Yes, but I have no idea why it’s appear:

@Override
    public Block execute()
    {
        // Note: make sure to keep any existing query string since the user could need that to render its doc properly.
        String queryString = addToQueryString(this.xcontextProvider.get().getRequest().getQueryString(),
            getQueryString());
        String path = this.bridge.getDocumentURL(this.bridge.getCurrentDocumentReference(),
            GOSTExportResourceReferenceHandler.ACTION_STRING, queryString, null);
        ResourceReference linkReference = new ResourceReference(path, ResourceType.PATH);

        Map<String, String> linkParameters = new HashMap<>();
        linkParameters.put("class", "btn btn-primary");

        Block buttonLabelBlocks = this.localizationManager.getTranslation(getButtonLabelTranslationKey()).render();
        return new LinkBlock(Arrays.asList(buttonLabelBlocks), linkReference, false, linkParameters);
    }

Exception in line with

this.localizationManager.getTranslation(getButtonLabelTranslationKey()).render();

I’ve checked

this.localizationManager

is initialized, maybe getTranslation return null, but why?

In stack trace exist
text

Caused by: org.xwiki.rendering.RenderingException: Failed to evaluate template with id [/skins/flamingo/menus_content.vm]
Caused by: org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with namespace [/skins/flamingo/view.vm]
5

As I understand problem is in
image

image

because of locale.getLanguage() that return NULL;

Are there any idea why it’s happen;

6

I noticed that when I start xwiki there is error in log

org.xwiki.extension.InvalidExtensionException: Failed to load local extension [data\extension\repository\org%2Exwiki%2Econtrib%2Elatex%3Alatex\1%2E24-SNAPSHOT\org%2Exwiki%2Econtrib%2Elatex%3Alatex-1%2E24-SNAPSHOT.xed]: [org.xwiki.extension.repository.internal.local.DefaultLocalExtensionFile@7112b21a] file does not exists
        at org.xwiki.extension.repository.internal.local.LocalExtensionStorage.loadDescriptor(LocalExtensionStorage.java:181)
        at org.xwiki.extension.repository.internal.local.LocalExtensionStorage.loadExtensions(LocalExtensionStorage.java:143)
        at org.xwiki.extension.repository.internal.local.LocalExtensionStorage.loadExtensions(LocalExtensionStorage.java:140)
        at org.xwiki.extension.repository.internal.local.LocalExtensionStorage.loadExtensions(LocalExtensionStorage.java:140)
        at org.xwiki.extension.repository.internal.local.LocalExtensionStorage.loadExtensions(LocalExtensionStorage.java:112)
        at org.xwiki.extension.repository.internal.local.DefaultLocalExtensionRepository.initialize(DefaultLocalExtensionRepository.java:108)
        at org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39)
        at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:550)
        at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:636)
        at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:329)
        at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:320)
        at org.xwiki.component.embed.EmbeddableComponentManager.getDependencyInstance(EmbeddableComponentManager.java:591)
        at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:540)
        at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:636)
        at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:329)
        at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:320)
        at org.xwiki.component.embed.EmbeddableComponentManager.getDependencyInstance(EmbeddableComponentManager.java:591)
        at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:540)
        at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:636)
        at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:329)
        at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:320)
        at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:290)
        at org.xwiki.container.servlet.XWikiServletContextListener.contextInitialized(XWikiServletContextListener.java:116)
        at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:1049)
        at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:624)
        at org.eclipse.jetty.server.handler.ContextHandler.contextInitialized(ContextHandler.java:984)
        at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:740)
        at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:392)
        at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1304)
        at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:901)
        at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:306)
        at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:532)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93)
        at org.eclipse.jetty.deploy.bindings.StandardStarter.processBinding(StandardStarter.java:40)
        at org.eclipse.jetty.deploy.AppLifeCycle.runBindings(AppLifeCycle.java:183)
        at org.eclipse.jetty.deploy.DeploymentManager.requestAppGoal(DeploymentManager.java:516)
        at org.eclipse.jetty.deploy.DeploymentManager.addApp(DeploymentManager.java:151)
        at org.eclipse.jetty.deploy.providers.ScanningAppProvider.fileAdded(ScanningAppProvider.java:210)
        at org.eclipse.jetty.deploy.providers.WebAppProvider.fileAdded(WebAppProvider.java:442)
        at org.eclipse.jetty.deploy.providers.ScanningAppProvider$1.fileAdded(ScanningAppProvider.java:61)
        at org.eclipse.jetty.util.Scanner$DiscreteListener.pathAdded(Scanner.java:284)
        at org.eclipse.jetty.util.Scanner.reportAddition(Scanner.java:896)
        at org.eclipse.jetty.util.Scanner.reportDifferences(Scanner.java:862)
        at org.eclipse.jetty.util.Scanner.scan(Scanner.java:769)
        at org.eclipse.jetty.util.Scanner.startScanning(Scanner.java:658)
        at org.eclipse.jetty.util.Scanner.doStart(Scanner.java:630)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93)
        at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:171)
        at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:121)
        at org.eclipse.jetty.deploy.providers.ScanningAppProvider.doStart(ScanningAppProvider.java:182)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93)
        at org.eclipse.jetty.deploy.DeploymentManager.startAppProvider(DeploymentManager.java:605)
        at org.eclipse.jetty.deploy.DeploymentManager.doStart(DeploymentManager.java:246)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93)
        at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:171)
        at org.eclipse.jetty.server.Server.start(Server.java:470)
        at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:121)
        at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:89)
        at org.eclipse.jetty.server.Server.doStart(Server.java:415)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93)
        at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1919)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.eclipse.jetty.start.Main.invokeMain(Main.java:229)
        at org.eclipse.jetty.start.Main.start(Main.java:528)
        at org.eclipse.jetty.start.Main.main(Main.java:76)
7

The problem was in file
image
I’ve deleted in custom extension field
latex.exportToPDF.button.label