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', '98aaea56765c46addbf3c53fbb2ee2fb', '216.73.216.126', '1751418991', '1751418991', '/shopping_cart.php')

[XT SQL Error]