title: FacesMessage error rendering view
body: <p>I have this a when launching(clean build and run) my JavaEE web application :</p>
  
  <pre><code>SEVERE: Error Rendering View[/TV/Admin3B/Monitoring/AjoutSpots.xhtml]
  java.lang.IllegalStateException: PWC3999: Cannot create a session after the response has been committed
      at org.apache.catalina.connector.Request.doGetSession(Request.java:2880)
      at org.apache.catalina.connector.Request.getSession(Request.java:2577)
      at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:920)
      at com.sun.faces.context.ExternalContextImpl.getSession(ExternalContextImpl.java:155)
      at com.sun.faces.renderkit.ServerSideStateHelper.writeState(ServerSideStateHelper.java:175)
      at com.sun.faces.renderkit.ResponseStateManagerImpl.writeState(ResponseStateManagerImpl.java:122)
      at com.sun.faces.application.StateManagerImpl.writeState(StateManagerImpl.java:166)
          at com.sun.faces.application.view.WriteBehindStateWriter.flushToWriter(WriteBehindStateWriter.java:225)
      at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:418)
      at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
      at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288)
      at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121)
      at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
      at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
      at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
      at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
      at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
      at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
      at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
      at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
      at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
      at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
      at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
      at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
      at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
      at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
      at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
      at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
      at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
      at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
      at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
      at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
      at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
      at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
      at java.lang.Thread.run(Thread.java:662)
  </code></pre>
  
  <p>I print my <strong>FacesMessage</strong> with <code>&lt;p:growl /&gt;</code>
  when I remove it and I reload the page and insert it again the problem was solved , but when I relaunch the application this bug is thrown again.
  I don't have any idea about this.</p>
  
  <p>Thanks</p>
  
  <p>Mounir</p>