enef_sql_query (mysqli_query) error: Incorrect key file for table './userenef_project_o/sys_sessions.MYI'; try to repair it

UPDATE sys_sessions SET active=0,tempData=CONCAT('idolimit miatt: ',now()) WHERE user IS NOT NULL AND type NOT IN(1,2,20,60,61,62) AND active!=0 AND (last_action < date_sub(now(), INTERVAL 15 minute))