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java.lang.UnsupportedOperationException: 	at com.sun.faces.config.ConfigureListener$InitFacesContext.getViewRoot(ConfigureListener.java:1690)	at com.sun.faces.util.MessageFactory.getMessage(MessageFactory.java:113)	at com.sun.faces.util.MessageUtils.getExceptionMessageString(MessageUtils.java:277)	at com.sun.faces.util.Util.createInstance(Util.java:477)	at com.sun.faces.config.ConfigureListener.configure(ConfigureListener.java:671)	at com.sun.faces.config.ConfigureListener.configure(ConfigureListener.java:503)	at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:402)	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3764)	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4216)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)	at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)	at org.apache.catalina.core.StandardService.start(StandardService.java:448)	at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)	at org.apache.catalina.startup.Catalina.start(Catalina.java:552)	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:585)	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)