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java.lang.NullPointerException: 	at com.icesoft.faces.component.commandsortheader.CommandSortHeaderRenderer.encodeEnd(CommandSortHeaderRenderer.java:80)	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:833)	at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:369)	at com.icesoft.faces.component.ext.renderkit.TableRenderer.processUIColumnHeader(TableRenderer.java:486)	at com.icesoft.faces.component.ext.renderkit.TableRenderer.renderColumnHeader(TableRenderer.java:240)	at com.icesoft.faces.component.ext.renderkit.TableRenderer.renderFacet(TableRenderer.java:189)	at com.icesoft.faces.renderkit.dom_html_basic.TableRenderer.encodeBegin(TableRenderer.java:121)	at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:785)	at javax.faces.component.UIData.encodeBegin(UIData.java:879)	at com.icesoft.faces.component.panelseries.UISeries.encodeBegin(UISeries.java:309)	at com.icesoft.faces.component.ext.HtmlDataTable.encodeBegin(HtmlDataTable.java:109)	at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:355)	at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:95)	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:809)	at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357)	at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:95)	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:809)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:493)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:498)	at com.icesoft.faces.facelets.D2DFaceletViewHandler.renderResponse(D2DFaceletViewHandler.java:281)	at com.icesoft.faces.application.D2DViewHandler.renderView(D2DViewHandler.java:158)	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)	at com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:51)	at com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.renderCycle(ReceiveSendUpdates.java:171)	at com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.service(ReceiveSendUpdates.java:112)	at com.icesoft.faces.webapp.http.core.RequestVerifier.service(RequestVerifier.java:65)	at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:55)	at com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:48)	at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:55)	at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:92)	at com.icesoft.faces.webapp.http.servlet.SessionVerifier.service(SessionVerifier.java:58)	at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:55)	at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:184)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)	at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:55)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1657)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1597)	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)	at com.pwc.lu.web.login.filter.UserSessionFilter.doFilter(UserSessionFilter.java:74)	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)	at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:934)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:502)	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:179)	at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:864)	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:445)	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:504)	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:301)	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:275)	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1604)