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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)