1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', 'f0b7e0b73c0baeeebdc73e391d0a5642', '216.73.216.121', '1751966551', '1751966551', '/shop_content.php/coID/7')

[XT SQL Error]