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  1. PUBLIC - Liferay Portal Community Edition
  2. LPS-53452

Null Pointer Exception occurs when adding suggestion to KB Display portlet configured to view folder

    Details

      Description

      Steps to reproduce:

      1. Deploy KB plugin
      2. Go to Admin > Content > Knowledge Base
      3. Add KB Folder
      4. Add KB Article inside KB Folder
      5. Go to My Sites > Liferay
      6. Add KB Display portlet
      7. Configure KB Display Portlet, choose to display the KB Folder
      8. Add a suggestion to KB Display Portlet

      Expected result: Suggestion is added and displayed in the portlet

      Actual result: The portlet displays the text "Portlet is temporarily unavailable," and console errors are thrown:

      19:52:07,104 ERROR [http-bio-8080-exec-2][PortletServlet:116] javax.portlet.PortletException: java.lang.NullPointerException
      javax.portlet.PortletException: java.lang.NullPointerException
              at com.liferay.knowledgebase.display.portlet.DisplayPortlet.render(DisplayPortlet.java:103)
              at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:103)
              at com.liferay.portlet.ScriptDataPortletFilter.doFilter(ScriptDataPortletFilter.java:55)
              at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:100)
              at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:64)
              at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:112)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
              at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:605)
              at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:544)
              at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:583)
              at com.liferay.portlet.InvokerPortletImpl.invokeRender(InvokerPortletImpl.java:656)
              at com.liferay.portlet.InvokerPortletImpl.render(InvokerPortletImpl.java:362)
              at org.apache.jsp.html.portal.render_005fportlet_jsp._jspService(render_005fportlet_jsp.java:1242)
              at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at com.liferay.portal.servlet.DirectRequestDispatcher.include(DirectRequestDispatcher.java:57)
              at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.doDispatch(ClassLoaderRequestDispatcherWrapper.java:78)
              at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.include(ClassLoaderRequestDispatcherWrapper.java:53)
              at com.liferay.portlet.PortletContainerImpl._doRender(PortletContainerImpl.java:655)
              at com.liferay.portlet.PortletContainerImpl.render(PortletContainerImpl.java:138)
              at com.liferay.portlet.SecurityPortletContainerWrapper.render(SecurityPortletContainerWrapper.java:141)
              at com.liferay.portlet.RestrictPortletContainerWrapper.render(RestrictPortletContainerWrapper.java:126)
              at com.liferay.portal.kernel.portlet.PortletContainerUtil.render(PortletContainerUtil.java:156)
              at com.liferay.portal.layoutconfiguration.util.PortletRenderer._render(PortletRenderer.java:125)
              at com.liferay.portal.layoutconfiguration.util.PortletRenderer.render(PortletRenderer.java:72)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.doProcessTemplate(RuntimePageImpl.java:452)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.doDispatch(RuntimePageImpl.java:284)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.processTemplate(RuntimePageImpl.java:113)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.processTemplate(RuntimePageImpl.java:124)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageUtil.processTemplate(RuntimePageUtil.java:69)
              at org.apache.jsp.html.portal.layout.view.portlet_jsp._jspService(portlet_jsp.java:557)
              at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
              at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
              at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
              at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:605)
              at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:544)
              at com.liferay.portal.action.LayoutAction.includeLayoutContent(LayoutAction.java:298)
              at com.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:401)
              at com.liferay.portal.action.LayoutAction.doExecute(LayoutAction.java:196)
              at com.liferay.portal.action.LayoutAction.execute(LayoutAction.java:91)
              at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
              at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
              at com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:179)
              at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
              at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
              at com.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:549)
              at com.liferay.portal.servlet.MainServlet.service(MainServlet.java:526)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:293)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
              at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
              at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
              at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
              at com.liferay.portal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:156)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.strip.StripFilter.processFilter(StripFilter.java:360)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:123)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:293)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.i18n.I18nFilter.processFilter(I18nFilter.java:243)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:267)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.sso.ntlm.NtlmPostFilter.processFilter(NtlmPostFilter.java:83)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.sharepoint.SharepointFilter.processFilter(SharepointFilter.java:88)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:226)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:185)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
              at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:185)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
              at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
              at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
              at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
              at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
              at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
              at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
              at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
              at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
              at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
              at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
              at java.lang.Thread.run(Thread.java:745)
      Caused by: java.lang.NullPointerException
              at com.liferay.knowledgebase.display.selector.KBFolderKBArticleSelector.findByUrlTitle(KBFolderKBArticleSelector.java:92)
              at com.liferay.knowledgebase.display.portlet.DisplayPortlet.getKBArticle(DisplayPortlet.java:281)
              at com.liferay.knowledgebase.display.portlet.DisplayPortlet.render(DisplayPortlet.java:77)
              ... 163 more
      Feb 09, 2015 7:52:07 PM org.apache.catalina.core.ApplicationDispatcher invoke
      SEVERE: Servlet.service() for servlet 2 Servlet threw exception
      java.lang.NullPointerException
              at com.liferay.knowledgebase.display.selector.KBFolderKBArticleSelector.findByUrlTitle(KBFolderKBArticleSelector.java:92)
              at com.liferay.knowledgebase.display.portlet.DisplayPortlet.getKBArticle(DisplayPortlet.java:281)
              at com.liferay.knowledgebase.display.portlet.DisplayPortlet.render(DisplayPortlet.java:77)
              at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:103)
              at com.liferay.portlet.ScriptDataPortletFilter.doFilter(ScriptDataPortletFilter.java:55)
              at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:100)
              at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:64)
              at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:112)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
              at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:605)
              at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:544)
              at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:583)
              at com.liferay.portlet.InvokerPortletImpl.invokeRender(InvokerPortletImpl.java:656)
              at com.liferay.portlet.InvokerPortletImpl.render(InvokerPortletImpl.java:362)
              at org.apache.jsp.html.portal.render_005fportlet_jsp._jspService(render_005fportlet_jsp.java:1242)
              at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at com.liferay.portal.servlet.DirectRequestDispatcher.include(DirectRequestDispatcher.java:57)
              at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.doDispatch(ClassLoaderRequestDispatcherWrapper.java:78)
              at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.include(ClassLoaderRequestDispatcherWrapper.java:53)
              at com.liferay.portlet.PortletContainerImpl._doRender(PortletContainerImpl.java:655)
              at com.liferay.portlet.PortletContainerImpl.render(PortletContainerImpl.java:138)
              at com.liferay.portlet.SecurityPortletContainerWrapper.render(SecurityPortletContainerWrapper.java:141)
              at com.liferay.portlet.RestrictPortletContainerWrapper.render(RestrictPortletContainerWrapper.java:126)
              at com.liferay.portal.kernel.portlet.PortletContainerUtil.render(PortletContainerUtil.java:156)
              at com.liferay.portal.layoutconfiguration.util.PortletRenderer._render(PortletRenderer.java:125)
              at com.liferay.portal.layoutconfiguration.util.PortletRenderer.render(PortletRenderer.java:72)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.doProcessTemplate(RuntimePageImpl.java:452)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.doDispatch(RuntimePageImpl.java:284)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.processTemplate(RuntimePageImpl.java:113)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.processTemplate(RuntimePageImpl.java:124)
              at com.liferay.portal.layoutconfiguration.util.RuntimePageUtil.processTemplate(RuntimePageUtil.java:69)
              at org.apache.jsp.html.portal.layout.view.portlet_jsp._jspService(portlet_jsp.java:557)
              at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
              at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
              at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
              at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:605)
              at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:544)
              at com.liferay.portal.action.LayoutAction.includeLayoutContent(LayoutAction.java:298)
              at com.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:401)
              at com.liferay.portal.action.LayoutAction.doExecute(LayoutAction.java:196)
              at com.liferay.portal.action.LayoutAction.execute(LayoutAction.java:91)
              at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
              at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
              at com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:179)
              at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
              at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
              at com.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:549)
              at com.liferay.portal.servlet.MainServlet.service(MainServlet.java:526)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:293)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
              at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
              at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
              at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
              at com.liferay.portal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:156)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.strip.StripFilter.processFilter(StripFilter.java:360)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:123)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:293)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.i18n.I18nFilter.processFilter(I18nFilter.java:243)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:267)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.sso.ntlm.NtlmPostFilter.processFilter(NtlmPostFilter.java:83)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.sharepoint.SharepointFilter.processFilter(SharepointFilter.java:88)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
              at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:226)
              at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:185)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
              at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:185)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
              at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
              at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
              at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
              at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
              at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
              at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
              at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
              at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
              at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
              at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
              at java.lang.Thread.run(Thread.java:745)
       
      19:52:07,273 ERROR [http-bio-8080-exec-2][render_portlet_jsp:132] null
      java.lang.NullPointerException
              at com.liferay.knowledgebase.display.selector.KBFolderKBArticleSelector.findByUrlTitle(KBFolderKBArticleSelector.java:92)
              at com.liferay.knowledgebase.display.portlet.DisplayPortlet.getKBArticle(DisplayPortlet.java:281)
              at com.liferay.knowledgebase.display.portlet.DisplayPortlet.render(DisplayPortlet.java:77)
              at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:103)
              at com.liferay.portlet.ScriptDataPortletFilter.doFilter(ScriptDataPortletFilter.java:55)
              at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:100)
              at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:64)
              at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:112)
              at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
              at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
              at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
              at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:605)
              at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:544)
              at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:583)
              at com.liferay.portlet.InvokerPortletImpl.invokeRender(InvokerPortletImpl.java:656)
      

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            Assignee:
            austin.chiang Austin Chiang
            Reporter:
            austin.chiang Austin Chiang
            Participants of an Issue:
            Recent user:
            Esther Sanz
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            0 Vote for this issue
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              Dates

              Created:
              Updated:
              Resolved:
              Days since last comment:
              6 years, 36 weeks ago

                Packages

                Version Package
                6.2.X EE
                7.0.0 M4