Details
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Bug
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Resolution: Unresolved
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Major
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None
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13.9
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Unknown
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Description
I just experienced the following: I tried to use the import feature for an XML of a file instead of importing a XAR. The UI didn't provide any information about what I was doing was wrong, I got my file uploaded and the spinning wheel to display the import option. However I got a big scary stacktrace in the console:
2021-11-04 17:20:29,589 [qtp654845766-24 - http://localhost:8080/xwiki/bin/get/XWiki/XWikiPreferences?xpage=packagedescriptor&package=InplaceEditing.xml] ERROR c.x.x.XWiki - Error while evaluating velocity template [packagedescriptor.vm] org.xwiki.rendering.RenderingException: Failed to execute renderer at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:270) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:250) 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:2508) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:179) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:606) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:289) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:115) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder$NotAsyncServlet.service(ServletHolder.java:1411) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:763) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1631) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618) at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:226) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618) at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:549) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:602) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1369) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:489) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1284) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:501) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938) at java.lang.Thread.run(Thread.java:748) Caused by: org.xwiki.rendering.RenderingException: Failed to evaluate template with id [/templates/packagedescriptor.vm] at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:227) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:180) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:137) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:53) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:267) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:267) ... 63 common frames omitted Caused by: org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with namespace [/templates/packagedescriptor.vm] at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:288) 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:225) ... 69 common frames omitted 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] 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.ASTMap.value(ASTMap.java:84) 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.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) ... 72 common frames omitted Caused by: java.lang.NullPointerException: null at org.xwiki.model.reference.EntityReferenceTree.<init>(EntityReferenceTree.java:65) at org.xwiki.model.reference.EntityReferenceTree.<init>(EntityReferenceTree.java:46) at org.xwiki.model.script.ModelScriptService.toTree(ModelScriptService.java:912) 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: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) ... 86 common frames omitted
Reproduction step:
- Go to administration > Content > Import
- Select the XML of an XWiki page to import
- Click on the uploaded XML to display the import options
Expected result:
- at a point the UI should display that the uploaded file is not of the expected format
Obtained result:
- the UI shows no information and seems to be loading the document, the console displays a stacktrace