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java.lang.NullPointerException: 	at com.sun.enterprise.management.util.J2EEManagementObjectManager.createAppMBean(J2EEManagementObjectManager.java:547)	at com.sun.enterprise.server.ApplicationLoader.createRootMBean(ApplicationLoader.java:284)	at com.sun.enterprise.server.AbstractManager.load(AbstractManager.java:205)	at com.sun.enterprise.server.ApplicationLifecycle.onStartup(ApplicationLifecycle.java:224)	at com.sun.enterprise.server.ApplicationServer.onStartup(ApplicationServer.java:446)	at com.sun.enterprise.server.ondemand.OnDemandServer.onStartup(OnDemandServer.java:134)	at com.sun.enterprise.server.PEMain.run(PEMain.java:409)	at com.sun.enterprise.server.PEMain.main(PEMain.java:336)	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:597)	at com.sun.enterprise.server.PELaunch.main(PELaunch.java:415)