SQL Syntax Error - Unsure if it is empty value or backslash
If you want to omit a column you can either apply a column list:

INSERT INTO mw_reward_point_order (col_1,col_2col_3,col_4,col_6)
VALUES(9477,0,0,144,'100/1')


or specify NULL:

INSERT INTO mw_reward_point_order VALUES(9477,0,0,144,NULL,'100/1')