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MySQL error 3746

MySQL server error 3746 is ER_TEMP_TABLE_PREVENTS_SWITCH_GLOBAL_BINLOG_FORMAT, reported with SQLSTATE HY000.

Changing @@global.binlog_format or @@persist.binlog_format is disallowed when any replication channel has open temporary table(s). You could wait until Replica_open_temp_tables = 0 and try again
Error3746
NameER_TEMP_TABLE_PREVENTS_SWITCH_GLOBAL_BINLOG_FORMAT
SQLSTATEHY000
GroupServer errors

Source: MySQL 8.4 Error Reference