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### Instruction:
ISSUDIR-1-ISSUDIR_RESTART
### Response:
(Severity: 1), (Category: INSTALL), (Description: ISSU operation aborted because ISSU Director unexpectedly restarted and the ISSU operation could not be recovered.), (Recommended Action: The reason for this issu operation failure has to be analyzed. Check the issu operation log by 'show tech-support issu' to understand the reason for the operation abort. Collect the show tech logs by running 'show tech-support issu' and forward the logs to the TAC. Provide the details about any relevant system events/operations before this failure.)
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