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

Query:
SELECT visitor_ip FROM visitors_table WHERE visitor_ip='54.147.158.215' AND visitor_date LIKE '%2016-10-01%' LIMIT 1 in /var/www/vhosts/wonderfulwidows.com/httpdocs/inc/classes/class_mysql.php on line 141