Can not import content

jadamek · August 10, 2023, 10:46am

Hello,
i am migrating xwiki to new server. I have exported content on the old one. I have tried to import it into new one. But no luck. Both of them are version 13.10.6.

Here is my catalina.out:

[2023-08-10 12:37:39] [info] 2023-08-10 12:37:39,795 [http-nio-8080-exec-4 - http://brn-dev-wiki.sa.cz:8080/xwiki/bin/get/XWiki/XWikiPreferences?xpage=packagedescriptor&package=export2.xar] ERROR c.x.x.XWiki                    - Error while evaluating velocity template [packagedescriptor.vm]
[2023-08-10 12:37:39] [info] org.xwiki.rendering.RenderingException: Failed to execute renderer
[2023-08-10 12:37:39] [info] #011at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:270)
[2023-08-10 12:37:39] [info] #011at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:250)
[2023-08-10 12:37:39] [info] #011at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:774)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:747)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:727)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:713)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2522)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:179)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:608)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:292)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:115)
[2023-08-10 12:37:39] [info] #011at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
[2023-08-10 12:37:39] [info] #011at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
[2023-08-10 12:37:39] [info] #011at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
[2023-08-10 12:37:39] [info] #011at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
[2023-08-10 12:37:39] [info] #011at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
[2023-08-10 12:37:39] [info] #011at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
[2023-08-10 12:37:39] [info] #011at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
[2023-08-10 12:37:39] [info] #011at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
[2023-08-10 12:37:39] [info] #011at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)
[2023-08-10 12:37:39] [info] #011at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
[2023-08-10 12:37:39] [info] #011at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
[2023-08-10 12:37:39] [info] #011at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684)
[2023-08-10 12:37:39] [info] #011at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
[2023-08-10 12:37:39] [info] #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[2023-08-10 12:37:39] [info] #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[2023-08-10 12:37:39] [info] #011at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
[2023-08-10 12:37:39] [info] #011at java.base/java.lang.Thread.run(Thread.java:829)
[2023-08-10 12:37:39] [info] Caused by: org.xwiki.rendering.RenderingException: Failed to evaluate template with id [/templates/packagedescriptor.vm]
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:227)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53)
[2023-08-10 12:37:39] [info] #011at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:267)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
[2023-08-10 12:37:39] [info] #011at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:267)
[2023-08-10 12:37:39] [info] #011... 53 common frames omitted
[2023-08-10 12:37:39] [info] Caused by: org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with namespace [/templates/packagedescriptor.vm]
[2023-08-10 12:37:39] [info] #011at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:288)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:321)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:95)
[2023-08-10 12:37:39] [info] #011at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:225)
[2023-08-10 12:37:39] [info] #011... 59 common frames omitted
[2023-08-10 12:37:39] [info] Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'toTree' in  class org.xwiki.model.script.ModelScriptService threw exception java.lang.NullPointerException at /templates/packagedescriptor.vm[line 47, column 36]
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:308)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:235)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTMap.value(ASTMap.java:84)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.Template.merge(Template.java:358)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.Template.merge(Template.java:262)
[2023-08-10 12:37:39] [info] #011at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:280)
[2023-08-10 12:37:39] [info] #011... 62 common frames omitted
[2023-08-10 12:37:39] [info] Caused by: java.lang.NullPointerException: null
[2023-08-10 12:37:39] [info] #011at org.xwiki.model.reference.EntityReferenceTree.<init>(EntityReferenceTree.java:65)
[2023-08-10 12:37:39] [info] #011at org.xwiki.model.reference.EntityReferenceTree.<init>(EntityReferenceTree.java:46)
[2023-08-10 12:37:39] [info] #011at org.xwiki.model.script.ModelScriptService.toTree(ModelScriptService.java:928)
[2023-08-10 12:37:39] [info] #011at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[2023-08-10 12:37:39] [info] #011at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[2023-08-10 12:37:39] [info] #011at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[2023-08-10 12:37:39] [info] #011at java.base/java.lang.reflect.Method.invoke(Method.java:566)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
[2023-08-10 12:37:39] [info] #011at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
[2023-08-10 12:37:39] [info] #011... 76 common frames omitted

Can anybody help?
Thanks

lucaa · October 4, 2023, 9:45am

Hello jadamek,

If I guess correctly from the stack trace, you get an error (and this exception) after you upload the xar file in the wiki administration (on the new wiki) and then you click the name of the xar package in order to display the tree of pages in it and to import it.
The preview of the tree of pages never displays so you can never select the pages you want to import and then click the import button.

Can you confirm that this is the problem that you have?

Also, does this happen for any package you try to import in the new instance? Can you try to export another xar package from old instance (a smaller one, with less pages) and try to import it?

Thanks,
Anca

mnali · January 4, 2024, 8:01pm

@lucaa, the preview of tree of pages never displays here and I have the same logs that @jadamek posted. I also noticed that the problem only happens with pages that have large binary attachments (1GB page), on the other pages, the .xar export is loaded successfully.

mnali · January 5, 2024, 9:45pm

After deleting some attachments the size of the page lowered to about 3GB (it was more or less 4GB before) and the export function worked

mnali · January 9, 2024, 10:21pm

Here I thought that the page had 1GB because it was the export .xar file size but actually the page had about 4GB. I suspect that in this case, XWiki malformed the .xar file without all data resulting in a 1GB .xar file. After deleting one attachment and reducing the attachments size to about 3GB, the export function produced a .xar export that could be imported and its size was around 3GB.