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java.lang.NullPointerException: 	at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2266)	at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:514)	at weblogic.management.tools.AttributeInfo.readObject(AttributeInfo.java:272)	at java.lang.reflect.Method.invoke(Native Method)	at java.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2209)	at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1406)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)	at java.io.ObjectInputStream.inputArray(ObjectInputStream.java:1137)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)	at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2258)	at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:514)	at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1407)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)	at weblogic.management.internal.Helper.getMBeanInfo(Helper.java:245)	at weblogic.management.internal.Helper.getAdminOrConfigMBeanInfo(Helper.java:136)	at weblogic.management.internal.Helper.findExtendedInfo(Helper.java:190)	at weblogic.management.internal.DynamicMBeanImpl.readObject(DynamicMBeanImpl.java:2169)	at java.lang.reflect.Method.invoke(Native Method)	at java.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2209)	at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1406)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)	at java.util.ArrayList.readObject(ArrayList.java:526)	at java.lang.reflect.Method.invoke(Native Method)	at java.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2209)	at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1406)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)	at weblogic.management.ManagedServerAdmin.bootstrapLocalServer(ManagedServerAdmin.java:214)	at weblogic.management.ManagedServerAdmin.initialize(ManagedServerAdmin.java:122)	at weblogic.t3.srvr.T3Srvr.initialize1(T3Srvr.java:659)	at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:589)	at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:277)	at weblogic.Server.main(Server.java:32)