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java.lang.IllegalStateException: parent is null?	at javax.faces.webapp.UIComponentTag.findComponent(UIComponentTag.java:545)	at javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:315)	at org.apache.myfaces.taglib.core.ViewTag.doStartTag(ViewTag.java:73)	at com.icesoft.faces.webapp.parser.Parser.executeJspLifecycle(Parser.java:198)	at com.icesoft.faces.webapp.parser.Parser.parse(Parser.java:159)