java.lang.NullPointerException: This exception has no message.

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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:151)
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:205)
at weblogic.management.internal.Helper.preloadMBeanInfos(Helper.java:232)
at weblogic.management.Admin.initialize(Admin.java:226)
at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:359)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:206)
at weblogic.Server.main(Server.java:35)

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