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MySQL error code

MySQL error 4047

MySQL server error 4047 is ER_WARN_SQL_AFTER_MTS_GAPS_GAP_NOT_CALCULATED, reported with SQLSTATE HY000.

The until clause SQL_AFTER_MTS_GAPS is being used for channel '%s' when GTID_MODE = ON and SOURCE_AUTO_POSITION=1 meaning the server did not compute internally what gaps may exist in the relay log transaction execution. To close any execution gaps use either the SQL_BEFORE_GTIDS or SQL_AFTER_GTIDS until clause.
Error4047
NameER_WARN_SQL_AFTER_MTS_GAPS_GAP_NOT_CALCULATED
SQLSTATEHY000
GroupServer errors

Source: MySQL 8.4 Error Reference