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java.lang.NullPointerException at javax.faces.component.UIViewRoot$ViewMap.clear(UIViewRoot.java:1779) at com.sun.faces.config.InitFacesContext.release(InitFacesContext.java:239) at com.sun.faces.config.ConfigureListener.contextDestroyed(ConfigureListener.java:352) at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:5063) at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5719) at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:160) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1081) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1877) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)