Fatal error: Table './wwmain/visitors_table' is marked as crashed and should be repaired

Query:
SELECT visitor_ip FROM visitors_table WHERE visitor_ip='54.81.203.33' AND visitor_date LIKE '%2016-08-27%' LIMIT 1 in /var/www/vhosts/wonderfulwidows.com/httpdocs/inc/classes/class_mysql.php on line 141