hi , I have a problem: MySQL table table_a (

side

tinyint(1) NOT NULL COMMENT 'buy or sell'); Doris table table_a (side TINYINT NOT NULL COMMENT 'buy or sell'). When synchronizing with Flink CDC, an error occurs: [DATA_QUALITY_ERROR] Encountered unqualified data, stop processing. Reason: column(side) values is null while columns is not nullable. In theory, side should not be null. How can I resolve this?