Please find below issue and response is required accordingly.
<Dec 3, 2018 12:54:59 AM PKT> <Error> <HTTP Session> <BEA-100025> <An unexpected error occurred in HTTP session timeout callback while deleting sessions.
java.lang.IllegalStateException: HttpSession is invalid
at weblogic.servlet.internal.session.SessionData.getInternalAttribute(SessionData.java:790)
at weblogic.servlet.internal.session.SessionData.getInternalAttribute(SessionData.java:785)
at weblogic.servlet.internal.session.SessionContext.invalidateSession(SessionContext.java:1067)
at weblogic.servlet.internal.session.SessionContext.access$400(SessionContext.java:45)
at weblogic.servlet.internal.session.SessionContext$SessionInvalidator.cleanupExpiredSessions(SessionContext.java:1001)
Truncated. see log file for complete stacktrace
>
Thanks