MySQL Error Occurred

Error Message:
126: Incorrect key file for table './simpleshop/CubeCart_sessions.MYI'; try to repair it

SQL:
INSERT INTO CubeCart_sessions (`sessId`,`timeStart`,`timeLast`,`customer_id`,`ip`,`browser`) VALUES ('fe4d8eb5b35b9b9ee2fb0f5ef6330bc0','1416969347','1416969347',0,'54.224.53.192','CCBot/2.0 (http://commoncrawl.org/faq/)');