MySQL Error Message
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.
Reason for the Error
ER_WARN_SQL_AFTER_MTS_GAPS_GAP_NOT_CALCULATED
was added in 8.0.26.