禅道崩溃了，求解

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Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access violation: 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 '-bak' at line 1' in D:\WWW\pms\www\checktable.php:88 Stack trace: #0 D:\WWW\pms\www\checktable.php(88): PDO->query('check table cop...') #1 {main} thrown in D:\WWW\pms\www\checktable.php on line 88