problems with pdf generation

moflopes

i am using birt 2.3.2. When try pdf generate, appear this message

Caused by: java.lang.LinkageError: loader constraints violated when linking org/w3c/dom/DOMConfiguration class
at org.apache.xerces.jaxp.DocumentBuilderImpl.newDocument(Unknown Source)
at org.eclipse.birt.report.engine.parser.HTMLTextParser.parseHTML(HTMLTextParser.java:140)
at org.eclipse.birt.report.engine.parser.TextParser.parse(TextParser.java:111)
at org.eclipse.birt.report.engine.layout.pdf.util.HTML2Content.processForeignData(HTML2Content.java:317)
at org.eclipse.birt.report.engine.layout.pdf.util.HTML2Content.html2Content(HTML2Content.java:297)
at org.eclipse.birt.report.engine.layout.pdf.emitter.PDFLayoutEmitter.startForeign(PDFLayoutEmitter.java:493)
at org.eclipse.birt.report.engine.emitter.ContentEmitterUtil.startContent(ContentEmitterUtil.java:75)
at org.eclipse.birt.report.engine.layout.pdf.emitter.Layout.visitContent(Layout.java:365)
at org.eclipse.birt.report.engine.layout.pdf.emitter.Layout.visitContent(Layout.java:373)
at org.eclipse.birt.report.engine.layout.pdf.emitter.Layout.visitContent(Layout.java:373)
at org.eclipse.birt.report.engine.layout.pdf.emitter.Layout.visitContent(Layout.java:373)
at org.eclipse.birt.report.engine.layout.pdf.emitter.Layout.visitContent(Layout.java:373)
at org.eclipse.birt.report.engine.layout.pdf.emitter.RegionLayout.layout(RegionLayout.java:55)
at org.eclipse.birt.report.engine.layout.pdf.emitter.PageLayout.layoutHeader(PageLayout.java:150)
at org.eclipse.birt.report.engine.layout.pdf.emitter.PageLayout.initialize(PageLayout.java:80)
at org.eclipse.birt.report.engine.layout.pdf.emitter.PDFLayoutEmitter._startContainer(PDFLayoutEmitter.java:219)
at org.eclipse.birt.report.engine.layout.pdf.emitter.PDFLayoutEmitter.startContainer(PDFLayoutEmitter.java:184)
at org.eclipse.birt.report.engine.emitter.ContentEmitterAdapter.startPage(ContentEmitterAdapter.java:64)
at org.eclipse.birt.report.engine.layout.pdf.emitter.PDFLayoutEmitter.startPage(PDFLayoutEmitter.java:329)
at org.eclipse.birt.report.engine.layout.pdf.emitter.WrappedPDFLayoutEmitter.startPage(WrappedPDFLayoutEmitter.java:183)
at org.eclipse.birt.report.engine.layout.pdf.emitter.PDFLayoutEmitterProxy.startPage(PDFLayoutEmitterProxy.java:269)
at org.eclipse.birt.report.engine.emitter.CompositeContentEmitter.startPage(CompositeContentEmitter.java:284)
at org.eclipse.birt.report.engine.emitter.ContentEmitterUtil.startContent(ContentEmitterUtil.java:45)
at org.eclipse.birt.report.engine.layout.html.buffer.PageNode.start(PageNode.java:48)
at org.eclipse.birt.report.engine.layout.html.buffer.HTMLPageBuffer.startContent(HTMLPageBuffer.java:112)
at org.eclipse.birt.report.engine.layout.html.buffer.TableBreakBuffer.startContent(TableBreakBuffer.java:227)
at org.eclipse.birt.report.engine.layout.html.HTMLLeafItemLM.start(HTMLLeafItemLM.java:50)
at org.eclipse.birt.report.engine.layout.html.HTMLAbstractLM.layout(HTMLAbstractLM.java:132)
at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:68)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout(HTMLPageLM.java:90)
at org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutEngine.layout(HTMLReportLayoutEngine.java:101)
at org.eclipse.birt.report.engine.api.impl.RenderTask$PageRangeRender.render(RenderTask.java:494)
at org.eclipse.birt.report.engine.api.impl.RenderTask.render(RenderTask.java:206)
... 26 more