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', 'f0e42fb127bfa3f4c233bf7a42fcd26c', '216.73.216.116', '1752281781', '1752281781', '/shop_content.php/coID/4')

[XT SQL Error]