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MySQL error code

MySQL error 1755

MySQL server error 1755 is ER_MTA_CANT_PARALLEL, reported with SQLSTATE HY000.

Cannot execute the current event group in the parallel mode. Encountered event %s, relay-log name %s, position %s which prevents execution of this event group in parallel mode. Reason: %s.
Error1755
NameER_MTA_CANT_PARALLEL
SQLSTATEHY000
GroupServer errors

Source: MySQL 8.4 Error Reference