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java.lang.NullPointerException: 	at org.netbeans.modules.visualweb.insync.java.JavaClass$1.run(JavaClass.java:138)	at org.netbeans.modules.visualweb.insync.java.ReadTaskWrapper.run(ReadTaskWrapper.java:73)	at org.netbeans.modules.visualweb.insync.java.ReadTaskWrapper.run(ReadTaskWrapper.java:56)	at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:680)	at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:607)	at org.netbeans.modules.visualweb.insync.java.ReadTaskWrapper.execute(ReadTaskWrapper.java:80)	at org.netbeans.modules.visualweb.insync.java.ReadTaskWrapper.execute(ReadTaskWrapper.java:88)	at org.netbeans.modules.visualweb.insync.java.JavaClass.isSubTypeOf(JavaClass.java:135)	at org.netbeans.modules.visualweb.insync.models.FacesModel.openJavaUnits(FacesModel.java:829)	at org.netbeans.modules.visualweb.insync.models.FacesModel.syncImpl(FacesModel.java:1061)	at org.netbeans.modules.visualweb.insync.Model.sync(Model.java:219)	at org.netbeans.modules.visualweb.insync.models.FacesModelSet.getFacesModel(FacesModelSet.java:634)	at org.netbeans.modules.visualweb.designer.jsf.JsfForm.getFacesModel(JsfForm.java:288)	at org.netbeans.modules.visualweb.designer.jsf.JsfForm.getFacesModel(JsfForm.java:298)	at org.netbeans.modules.visualweb.designer.jsf.JsfForm.loadFacesModel(JsfForm.java:3017)