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

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This exception has no message.
java.lang.NullPointerException:
at com.endeca.content.xtags.BoostBuryNavigationRecordsTag.evaluate(BoostBuryNavigationRecordsTag.java:138)
at com.endeca.content.assembler.support.TagEvaluator.evaluate(TagEvaluator.java:61)
at com.endeca.content.assembler.ContentAssembler.evaluate(ContentAssembler.java:133)
at com.endeca.content.assembler.tags.PropertyTag.evaluate(PropertyTag.java:54)
at com.endeca.content.assembler.support.TagEvaluator.evaluate(TagEvaluator.java:61)
at com.endeca.content.assembler.ContentAssembler.evaluate(ContentAssembler.java:133)
at com.endeca.content.assembler.tags.ContentItemTag.evaluate(ContentItemTag.java:85)
at com.endeca.content.assembler.support.TagEvaluator.evaluate(TagEvaluator.java:61)
at com.endeca.content.assembler.ContentAssembler.evaluate(ContentAssembler.java:133)
at com.endeca.content.assembler.tags.ContentItemListTag.evaluate(ContentItemListTag.java:82)
at com.endeca.content.assembler.support.TagEvaluator.evaluate(TagEvaluator.java:61)
at com.endeca.content.assembler.ContentAssembler.evaluate(ContentAssembler.java:133)
at com.endeca.content.assembler.tags.PropertyTag.evaluate(PropertyTag.java:54)
at com.endeca.content.assembler.support.TagEvaluator.evaluate(TagEvaluator.java:61)
at com.endeca.content.assembler.ContentAssembler.evaluate(ContentAssembler.java:133)
at com.endeca.content.assembler.tags.ContentItemTag.evaluate(ContentItemTag.java:85)
at com.endeca.content.assembler.support.TagEvaluator.evaluate(TagEvaluator.java:61)
at com.endeca.content.assembler.ContentAssembler.evaluate(ContentAssembler.java:133)
at com.endeca.content.assembler.ContentAssembler.assemble(ContentAssembler.java:98)
at com.endeca.content.ene.ENEContentQuery.executeQuery(ENEContentQuery.java:199)
at com.endeca.content.ene.ENEContentQuery.execute(ENEContentQuery.java:69)
at com.helloworld.endeca.uiutil.helloworldEndecaUtility.executeQuery(helloworldEndecaUtility.java:2807)
at com.worldhello._jsp._templates._shop.__ajax_category_landing._jspService(__ajax_category_landing.java:2774)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1072)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:526)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at com.worldhello.jsp.JSPFilter.doFilter(JSPFilter.java:337)
at com.helloworld.jsp.helloworldJSPFilter.doFilter(helloworldJSPFilter.java:47)
at com.worldhello.html.DefaultRequestHandler.executeJSPFilter(DefaultRequestHandler.java:108)
at com.worldhello.html.StandardRequestHandler.executeJSP(StandardRequestHandler.java:692)
at com.worldhello.html.HTMLFilter.doFilter(HTMLFilter.java:322)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3892)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)

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