Last_SQL_Errno: 1677 cannot be converted from type 'varchar(1020)' to type 'varchar(255)'

Last_SQL_Errno: 1677 
Last_SQL_Errno:Column 3 of table 'a86819.zz_bitch_log' cannot be converted from type 'varchar(1020)' to type 'varchar(255)'

mysql> stop slave;
Query OK, 0 rows affected (0.00 sec)

mysql> set global slave_type_conversions = ALL_LOSSY; 
Query OK, 0 rows affected (0.00 sec)

mysql> start slave;
Query OK, 0 rows affected (0.00 sec)