MySQL Error Occurred

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

SQL:
INSERT INTO CubeCart_sessions (`sessId`,`timeStart`,`timeLast`,`customer_id`,`ip`,`browser`) VALUES ('2bd1fdbecdb5590a5e5cdebf8ee2de47','1397750695','1397750695',0,'54.81.170.136','CCBot/2.0 (http://commoncrawl.org/faq/)');