Stefan Eike created FOP-2790:
--------------------------------

             Summary: NullPointerException when using pdf-ua-mode in fop.xconf
                 Key: FOP-2790
                 URL: https://issues.apache.org/jira/browse/FOP-2790
             Project: FOP
          Issue Type: Bug
            Reporter: Stefan Eike


I'm setting up accessible publication using the Darwin Information Typing 
Architecture Open Toolkit (DITA-OT) 2.5.4, which ships Apache FOP 2.1.

When setting {{<pdf-ua-mode>PDF/UA-1</pdf-ua-mode>}} in the *fop.xconf*, the 
build fails with this error:




```

transform.fo2pdf.fop:
      [fop] [INFO] Default page-height set to: 297mm
      [fop] [INFO] Default page-width set to: 210mm
      [fop] [ERROR] Error while rendering page ii. Reason: 
java.lang.NullPointerException
      [fop] java.lang.NullPointerException
      [fop]     at 
org.apache.fop.render.pdf.PDFPainter.addStructTreeBBox(PDFPainter.java:197)
      [fop]     at 
org.apache.fop.render.pdf.PDFPainter.drawImage(PDFPainter.java:179)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.drawImage(IFRenderer.java:1296)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderImage(IFRenderer.java:1283)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderInlineViewport(AbstractRenderer.java:858)
      [fop]     at 
org.apache.fop.render.AbstractPathOrientedRenderer.renderInlineViewport(AbstractPathOrientedRenderer.java:832)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderInlineViewport(IFRenderer.java:864)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderInlineArea(AbstractRenderer.java:715)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderInlineArea(IFRenderer.java:928)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderLineArea(AbstractRenderer.java:690)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:572)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:613)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractPathOrientedRenderer.renderReferenceArea(AbstractPathOrientedRenderer.java:757)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:600)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:613)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:613)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractPathOrientedRenderer.renderReferenceArea(AbstractPathOrientedRenderer.java:757)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:600)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlockViewport(IFRenderer.java:844)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:593)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:613)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderRegion(AbstractRenderer.java:343)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderRegionViewport(AbstractRenderer.java:307)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderRegionViewport(IFRenderer.java:739)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderPageAreas(AbstractRenderer.java:262)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderPage(AbstractRenderer.java:243)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderPage(IFRenderer.java:587)
      [fop]     at 
org.apache.fop.area.RenderPagesModel.renderPage(RenderPagesModel.java:193)
      [fop]     at 
org.apache.fop.area.RenderPagesModel.checkPreparedPages(RenderPagesModel.java:174)
      [fop]     at 
org.apache.fop.area.RenderPagesModel.endDocument(RenderPagesModel.java:258)
      [fop]     at 
org.apache.fop.area.AreaTreeHandler.endDocument(AreaTreeHandler.java:342)
      [fop]     at 
org.apache.fop.fo.DelegatingFOEventHandler.endDocument(DelegatingFOEventHandler.java:94)
      [fop]     at 
org.apache.fop.accessibility.fo.FO2StructureTreeConverter.endDocument(FO2StructureTreeConverter.java:124)
      [fop]     at 
org.apache.fop.fo.FOTreeBuilder.endDocument(FOTreeBuilder.java:170)
      [fop]     at 
net.sf.saxon.event.ContentHandlerProxy.close(ContentHandlerProxy.java:274)
      [fop]     at net.sf.saxon.event.ProxyReceiver.close(ProxyReceiver.java:90)
      [fop]     at 
net.sf.saxon.event.ReceivingContentHandler.endDocument(ReceivingContentHandler.java:219)
      [fop]     at 
org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
      [fop]     at 
org.ditang.relaxng.defaults.RelaxNGDefaultsComponent.endDocument(Unknown Source)
      [fop]     at 
org.apache.xerces.xinclude.XIncludeHandler.endDocument(Unknown Source)
      [fop]     at 
org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
      [fop]     at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown 
Source)
      [fop]     at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
      [fop]     at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown 
Source)
      [fop]     at 
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown
 Source)
      [fop]     at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown 
Source)
      [fop]     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown 
Source)
      [fop]     at 
org.ditang.relaxng.defaults.RelaxDefaultsParserConfiguration.parse(Unknown 
Source)
      [fop]     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown 
Source)
      [fop]     at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
      [fop]     at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown 
Source)
      [fop]     at 
org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
      [fop]     at net.sf.saxon.event.Sender.sendSAXSource(Sender.java:404)
      [fop]     at net.sf.saxon.event.Sender.send(Sender.java:193)
      [fop]     at 
net.sf.saxon.IdentityTransformer.transform(IdentityTransformer.java:30)
      [fop]     at 
org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:285)
      [fop]     at 
org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)
      [fop]     at 
org.apache.fop.tools.anttasks.FOPTaskStarter.renderInputHandler(Fop.java:646)
      [fop]     at 
org.apache.fop.tools.anttasks.FOPTaskStarter.render(Fop.java:669)
      [fop]     at 
org.apache.fop.tools.anttasks.FOPTaskStarter.run(Fop.java:530)
      [fop]     at org.apache.fop.tools.anttasks.Fop.execute(Fop.java:367)
      [fop]     at 
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
      [fop]     at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
      [fop]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown 
Source)
      [fop]     at java.lang.reflect.Method.invoke(Unknown Source)
      [fop]     at 
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
      [fop]     at org.apache.tools.ant.Task.perform(Task.java:348)
      [fop]     at org.apache.tools.ant.Target.execute(Target.java:435)
      [fop]     at org.apache.tools.ant.Target.performTasks(Target.java:456)
      [fop]     at 
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
      [fop]     at 
org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
      [fop]     at 
org.apache.tools.ant.Project.executeTargets(Project.java:1260)
      [fop]     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:441)
      [fop]     at 
org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)
      [fop]     at 
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
      [fop]     at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
      [fop]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown 
Source)
      [fop]     at java.lang.reflect.Method.invoke(Unknown Source)
      [fop]     at 
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
      [fop]     at org.apache.tools.ant.Task.perform(Task.java:348)
      [fop]     at org.apache.tools.ant.Target.execute(Target.java:435)
      [fop]     at org.apache.tools.ant.Target.performTasks(Target.java:456)
      [fop]     at 
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
      [fop]     at 
org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
      [fop]     at 
org.apache.tools.ant.Project.executeTargets(Project.java:1260)
      [fop]     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:441)
      [fop]     at 
org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)
      [fop]     at 
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
      [fop]     at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
      [fop]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown 
Source)
      [fop]     at java.lang.reflect.Method.invoke(Unknown Source)
      [fop]     at 
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
      [fop]     at org.apache.tools.ant.Task.perform(Task.java:348)
      [fop]     at org.apache.tools.ant.Target.execute(Target.java:435)
      [fop]     at org.apache.tools.ant.Target.performTasks(Target.java:456)
      [fop]     at 
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
      [fop]     at org.apache.tools.ant.Project.executeTarget(Project.java:1376)
      [fop]     at 
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
      [fop]     at 
org.apache.tools.ant.Project.executeTargets(Project.java:1260)
      [fop]     at org.dita.dost.invoker.Main.runBuild(Main.java:1161)
      [fop]     at org.dita.dost.invoker.Main.startAnt(Main.java:486)
      [fop]     at org.apache.tools.ant.launch.Launcher.run(Launcher.java:287)
      [fop]     at org.apache.tools.ant.launch.Launcher.main(Launcher.java:113)
      [fop] [ERROR] Anttask - Error rendering fo file: 
C:\Users\Stefan.Eike\DITA\temp\noop\topic.fo <org.apache.fop.apps.FOPException
      [fop] java.lang.NullPointerException>org.apache.fop.apps.FOPException
      [fop] java.lang.NullPointerException
      [fop]     at 
org.apache.fop.tools.anttasks.FOPTaskStarter.renderInputHandler(Fop.java:650)
      [fop]     at 
org.apache.fop.tools.anttasks.FOPTaskStarter.render(Fop.java:669)
      [fop]     at 
org.apache.fop.tools.anttasks.FOPTaskStarter.run(Fop.java:530)
      [fop]     at org.apache.fop.tools.anttasks.Fop.execute(Fop.java:367)
      [fop]     at 
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
      [fop]     at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
      [fop]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown 
Source)
      [fop]     at java.lang.reflect.Method.invoke(Unknown Source)
      [fop]     at 
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
      [fop]     at org.apache.tools.ant.Task.perform(Task.java:348)
      [fop]     at org.apache.tools.ant.Target.execute(Target.java:435)
      [fop]     at org.apache.tools.ant.Target.performTasks(Target.java:456)
      [fop]     at 
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
      [fop]     at 
org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
      [fop]     at 
org.apache.tools.ant.Project.executeTargets(Project.java:1260)
      [fop]     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:441)
      [fop]     at 
org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)
      [fop]     at 
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
      [fop]     at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
      [fop]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown 
Source)
      [fop]     at java.lang.reflect.Method.invoke(Unknown Source)
      [fop]     at 
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
      [fop]     at org.apache.tools.ant.Task.perform(Task.java:348)
      [fop]     at org.apache.tools.ant.Target.execute(Target.java:435)
      [fop]     at org.apache.tools.ant.Target.performTasks(Target.java:456)
      [fop]     at 
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
      [fop]     at 
org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
      [fop]     at 
org.apache.tools.ant.Project.executeTargets(Project.java:1260)
      [fop]     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:441)
      [fop]     at 
org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)
      [fop]     at 
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
      [fop]     at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
      [fop]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown 
Source)
      [fop]     at java.lang.reflect.Method.invoke(Unknown Source)
      [fop]     at 
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
      [fop]     at org.apache.tools.ant.Task.perform(Task.java:348)
      [fop]     at org.apache.tools.ant.Target.execute(Target.java:435)
      [fop]     at org.apache.tools.ant.Target.performTasks(Target.java:456)
      [fop]     at 
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
      [fop]     at org.apache.tools.ant.Project.executeTarget(Project.java:1376)
      [fop]     at 
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
      [fop]     at 
org.apache.tools.ant.Project.executeTargets(Project.java:1260)
      [fop]     at org.dita.dost.invoker.Main.runBuild(Main.java:1161)
      [fop]     at org.dita.dost.invoker.Main.startAnt(Main.java:486)
      [fop]     at org.apache.tools.ant.launch.Launcher.run(Launcher.java:287)
      [fop]     at org.apache.tools.ant.launch.Launcher.main(Launcher.java:113)
      [fop] Caused by: org.apache.fop.apps.FOPException
      [fop] java.lang.NullPointerException
      [fop]     at 
org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:288)
      [fop]     at 
org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)
      [fop]     at 
org.apache.fop.tools.anttasks.FOPTaskStarter.renderInputHandler(Fop.java:646)
      [fop]     ... 45 more
      [fop] Caused by: java.lang.NullPointerException
      [fop]     at 
org.apache.fop.render.pdf.PDFPainter.addStructTreeBBox(PDFPainter.java:197)
      [fop]     at 
org.apache.fop.render.pdf.PDFPainter.drawImage(PDFPainter.java:179)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.drawImage(IFRenderer.java:1296)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderImage(IFRenderer.java:1283)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderInlineViewport(AbstractRenderer.java:858)
      [fop]     at 
org.apache.fop.render.AbstractPathOrientedRenderer.renderInlineViewport(AbstractPathOrientedRenderer.java:832)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderInlineViewport(IFRenderer.java:864)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderInlineArea(AbstractRenderer.java:715)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderInlineArea(IFRenderer.java:928)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderLineArea(AbstractRenderer.java:690)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:572)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:613)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractPathOrientedRenderer.renderReferenceArea(AbstractPathOrientedRenderer.java:757)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:600)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:613)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:613)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractPathOrientedRenderer.renderReferenceArea(AbstractPathOrientedRenderer.java:757)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:600)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlockViewport(IFRenderer.java:844)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:593)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:613)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderBlock(IFRenderer.java:1000)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:557)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderRegion(AbstractRenderer.java:343)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderRegionViewport(AbstractRenderer.java:307)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderRegionViewport(IFRenderer.java:739)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderPageAreas(AbstractRenderer.java:262)
      [fop]     at 
org.apache.fop.render.AbstractRenderer.renderPage(AbstractRenderer.java:243)
      [fop]     at 
org.apache.fop.render.intermediate.IFRenderer.renderPage(IFRenderer.java:587)
      [fop]     at 
org.apache.fop.area.RenderPagesModel.renderPage(RenderPagesModel.java:193)
      [fop]     at 
org.apache.fop.area.RenderPagesModel.checkPreparedPages(RenderPagesModel.java:174)
      [fop]     at 
org.apache.fop.area.RenderPagesModel.endDocument(RenderPagesModel.java:258)
      [fop]     at 
org.apache.fop.area.AreaTreeHandler.endDocument(AreaTreeHandler.java:342)
      [fop]     at 
org.apache.fop.fo.DelegatingFOEventHandler.endDocument(DelegatingFOEventHandler.java:94)
      [fop]     at 
org.apache.fop.accessibility.fo.FO2StructureTreeConverter.endDocument(FO2StructureTreeConverter.java:124)
      [fop]     at 
org.apache.fop.fo.FOTreeBuilder.endDocument(FOTreeBuilder.java:170)
      [fop]     at 
net.sf.saxon.event.ContentHandlerProxy.close(ContentHandlerProxy.java:274)
      [fop]     at net.sf.saxon.event.ProxyReceiver.close(ProxyReceiver.java:90)
      [fop]     at 
net.sf.saxon.event.ReceivingContentHandler.endDocument(ReceivingContentHandler.java:219)
      [fop]     at 
org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
      [fop]     at 
org.ditang.relaxng.defaults.RelaxNGDefaultsComponent.endDocument(Unknown Source)
      [fop]     at 
org.apache.xerces.xinclude.XIncludeHandler.endDocument(Unknown Source)
      [fop]     at 
org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
      [fop]     at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown 
Source)
      [fop]     at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
      [fop]     at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown 
Source)
      [fop]     at 
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown
 Source)
      [fop]     at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown 
Source)
      [fop]     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown 
Source)
      [fop]     at 
org.ditang.relaxng.defaults.RelaxDefaultsParserConfiguration.parse(Unknown 
Source)
      [fop]     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown 
Source)
      [fop]     at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
      [fop]     at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown 
Source)
      [fop]     at 
org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
      [fop]     at net.sf.saxon.event.Sender.sendSAXSource(Sender.java:404)
      [fop]     at net.sf.saxon.event.Sender.send(Sender.java:193)
      [fop]     at 
net.sf.saxon.IdentityTransformer.transform(IdentityTransformer.java:30)
      [fop]     at 
org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:285)
      [fop]     ... 47 more

```



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