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MySQL error code

MySQL error 3788

MySQL server error 3788 is ER_RPL_ENCRYPTION_FAILED_TO_ROTATE_LOGS, reported with SQLSTATE HY000.

Failed to rotate some logs after changing binlog encryption settings. Please fix the problem and rotate the logs manually.
Error3788
NameER_RPL_ENCRYPTION_FAILED_TO_ROTATE_LOGS
SQLSTATEHY000
GroupServer errors

Source: MySQL 8.4 Error Reference