bonjour
je suis en train de corriger les bugs d' un projet mais il y a une exception que je n ai pas pu résoudre. j utilise jsf 1.2 et comme implémentation icefaces
donc voici la trace :

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GRAVE: "Servlet.service()" pour la servlet Blocking Servlet a généré une exception
java.lang.RuntimeException: no message available
	at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:173)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:56)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
	at com.cynapsys.view.bean.TreeController.categorieNodeSelected(TreeController.java:433)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.el.parser.AstValue.invoke(AstValue.java:131)
	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
	at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
	at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:77)
	at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:91)
	at javax.faces.component.UICommand.broadcast(UICommand.java:383)
	at com.icesoft.faces.component.panelseries.UISeries$RowEvent.broadcast(UISeries.java:632)
	at com.icesoft.faces.component.panelseries.UISeries.broadcast(UISeries.java:273)
	at javax.faces.component.UIData.broadcast(UIData.java:854)
	at com.icesoft.faces.component.panelseries.UISeries.broadcast(UISeries.java:268)
	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:447)
	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:752)
	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
	at com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:16)
	at com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.renderCycle(ReceiveSendUpdates.java:114)
	at com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.service(ReceiveSendUpdates.java:66)
	at com.icesoft.faces.webapp.http.core.RequestVerifier.service(RequestVerifier.java:28)
	at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)
	at com.icesoft.faces.webapp.http.servlet.MainSessionBoundServlet.service(MainSessionBoundServlet.java:160)
	at com.icesoft.faces.webapp.http.servlet.SessionDispatcher$1.service(SessionDispatcher.java:42)
	at com.icesoft.faces.webapp.http.servlet.ThreadBlockingAdaptingServlet.service(ThreadBlockingAdaptingServlet.java:19)
	at com.icesoft.faces.webapp.http.servlet.EnvironmentAdaptingServlet.service(EnvironmentAdaptingServlet.java:63)
	at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:62)
	at com.icesoft.faces.webapp.http.servlet.SessionVerifier.service(SessionVerifier.java:22)
	at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
	at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:153)
	... 14 more