ORA-31698: Error stack buffer size must be specified and must be greater than 0.

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ORA-31698: Error stack buffer size must be specified and must be greaterthan 0.
Cause: Called get workerexception and either specified NULL or 0 for the error
stack size argument.
Action: Be sure to specify amerror stack buffer size that is big enough to hold the
error stack string (e.g. 4096 bytes). If this error occurs from a Data Pumpclient (e.g.
expdp or impdp), try the operation again. If the error occurs again, contactOracle
Customer Support and report the error.