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MySQL error code

MySQL error 1876

MySQL server error 1876 is ER_STOP_REPLICA_IO_THREAD_TIMEOUT, reported with SQLSTATE HY000.

STOP REPLICA command execution is incomplete: Replica IO thread got the stop signal, thread is busy, IO thread will stop once the current task is complete.
Error1876
NameER_STOP_REPLICA_IO_THREAD_TIMEOUT
SQLSTATEHY000
GroupServer errors

Source: MySQL 8.4 Error Reference