갑자기 repair.php에서 에러가납니다

select count(*) as cnt from g4_member where mb_id = '\'

1064 : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''\'' at line 1

error file : /gnuboard4/adm/repair.php




전 아무것도 하질 않았는데 왜 이런에러가 나는걸까요? -_-;;