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', '303171110973c7a12c58a54367caacf0', '216.73.216.121', '1751595211', '1751595211', '/shopping_cart.php')

[XT SQL Error]