1366 - Incorrect integer value: '' for column `pella-ware`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', '45cih70jjav01dnj34lqsc3567', '54.196.27.171', '1711618676', '1711618676', '/login.php?XTCsid=45cih70jjav01dnj34lqsc3567')

[XT SQL Error]