java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getJavaClasspathReferences(J2EEModuleVirtualComponent.java:338)
at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getNonManifestRefs(J2EEModuleVirtualComponent.java:242)
at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:166)
at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:214)
at org.eclipse.jst.jsp.core.internal.util.FacetModuleCoreSupportDelegate.resolveInReferenced(FacetModuleCoreSupportDelegate.java:179)
at org.eclipse.jst.jsp.core.internal.util.FacetModuleCoreSupportDelegate.resolve(FacetModuleCoreSupportDelegate.java:272)
at org.eclipse.jst.jsp.core.internal.util.FacetModuleCoreSupport.resolve(FacetModuleCoreSupport.java:195)
at org.eclipse.jst.jsp.core.taglib.ProjectDescription.resolve(ProjectDescription.java:1824)
at org.eclipse.jst.jsp.core.taglib.TaglibIndex.internalResolve(TaglibIndex.java:933)
at org.eclipse.jst.jsp.core.taglib.TaglibIndex.resolve(TaglibIndex.java:567)
at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager.getCacheKey(TLDCMDocumentManager.java:715)
at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager.getCMDocument(TLDCMDocumentManager.java:730)
at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.enableTags(TLDCMDocumentManager.java:121)
at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.processXMLStartTag(TLDCMDocumentManager.java:359)
at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.processRegionCollection(TLDCMDocumentManager.java:182)
at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.nodeParsed(TLDCMDocumentManager.java:191)
at org.eclipse.jst.jsp.core.internal.parser.JSPSourceParser.parseNodes(JSPSourceParser.java:296)
at org.eclipse.wst.sse.core.internal.text.StructuredDocumentReParser._core_reparse_text(StructuredDocumentReParser.java:355)
at org.eclipse.jst.jsp.core.internal.parser.JSPReParser.reparse(JSPReParser.java:153)
at org.eclipse.wst.sse.core.internal.text.StructuredDocumentReParser.reparse(StructuredDocumentReParser.java:1333)
at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.updateModel(BasicStructuredDocument.java:2713)
at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.internalReplaceText(BasicStructuredDocument.java:1923)
at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.replaceText(BasicStructuredDocument.java:2423)
at org.eclipse.core.internal.filebuffers.ResourceTextFileBuffer.setDocumentContent(ResourceTextFileBuffer.java:580)
at org.eclipse.core.internal.filebuffers.ResourceTextFileBuffer.initializeFileBufferContent(ResourceTextFileBuffer.java:288)
at org.eclipse.core.internal.filebuffers.ResourceFileBuffer.create(ResourceFileBuffer.java:245)
at org.eclipse.wst.sse.core.internal.FileBufferModelManager.getModel(FileBufferModelManager.java:786)
at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._doCommonGetModel(ModelManagerImpl.java:545)
at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._commonGetModel(ModelManagerImpl.java:509)
at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._commonGetModel(ModelManagerImpl.java:482)
at org.eclipse.jst.jsp.core.internal.java.search.JSPSearchDocument.getJSPTranslation(JSPSearchDocument.java:112)
at org.eclipse.jst.jsp.core.internal.java.search.JSPSearchDocument.getCharContents(JSPSearchDocument.java:77)
at org.eclipse.jst.jsp.core.internal.java.search.JavaSearchDocumentDelegate.getCharContents(JavaSearchDocumentDelegate.java:41)
at org.eclipse.jdt.internal.core.search.indexing.SourceIndexer.indexDocument(SourceIndexer.java:60)
at org.eclipse.jst.jsp.core.internal.java.search.JSPSearchParticipant.indexDocument(JSPSearchParticipant.java:72)
at org.eclipse.jdt.internal.core.search.indexing.IndexManager.indexDocument(IndexManager.java:498)
at org.eclipse.jdt.internal.core.search.indexing.IndexManager$1.execute(IndexManager.java:938)
at java.lang.Thread.run(Thread.java:744)

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