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MySQL error code

MySQL error 3901

MySQL server error 3901 is ER_PARTIAL_REVOKE_AND_DB_GRANT_BOTH_EXISTS, reported with SQLSTATE HY000.

'%s' privilege for database '%s' exists both as partial revoke and mysql.db simultaneously. It could mean that the 'mysql' schema is corrupted.
Error3901
NameER_PARTIAL_REVOKE_AND_DB_GRANT_BOTH_EXISTS
SQLSTATEHY000
GroupServer errors

Source: MySQL 8.4 Error Reference