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


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Stack trace

java.lang.NullPointerException
	at org.apache.myfaces.renderkit.html.util.AutoScrollPhaseListener.afterPhase(AutoScrollPhaseListener.java:52)
	at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:89)
	at org.apache.myfaces.lifecycle.LifecycleImpl.restoreView(LifecycleImpl.java:180)
	at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:65)
	at org.apache.myfaces.portlet.MyFacesGenericPortlet.processAction(MyFacesGenericPortlet.java:220)
	at org.apache.pluto.core.PortletServlet.dispatch(PortletServlet.java:214)
	at org.apache.pluto.core.PortletServlet.doPost(PortletServlet.java:145)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:574)
	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
	at org.apache.pluto.core.PortletInvoker.invoke(PortletInvoker.java:169)
	at org.apache.pluto.core.PortletInvoker.action(PortletInvoker.java:92)
	at org.apache.pluto.core.PortletContainerImpl.doAction(PortletContainerImpl.java:192)
	at org.apache.pluto.driver.PortalDriverServlet.doGet(PortalDriverServlet.java:103)
	at org.apache.pluto.driver.PortalDriverServlet.doPost(PortalDriverServlet.java:143)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)

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