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MySQL error code

MySQL error 1421

MySQL server error 1421 is ER_STMT_HAS_NO_OPEN_CURSOR, reported with SQLSTATE HY000.

The statement (%lu) has no open cursor.
Error1421
NameER_STMT_HAS_NO_OPEN_CURSOR
SQLSTATEHY000
GroupServer errors

Source: MySQL 8.4 Error Reference