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via Oracle Community by 807581, 1 year ago myClass	at	at	at	at	at	at	at java.util.LinkedList.writeObject(	at sun.reflect.GeneratedMethodAccessor208.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(	at java.lang.reflect.Method.invoke(	at	at	at	at	at	at org.apache.catalina.session.StandardSession.writeObject(	at org.apache.catalina.session.StandardSession.writeObjectData(	at org.apache.catalina.session.StoreBase.writeSession(	at	at	at org.apache.catalina.session.PersistentManagerBase.writeSession(	at org.apache.catalina.session.PersistentManagerBase.processMaxIdleBackups(	at	at	at