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', '3fd4e41dc6e4d248aeb8e135f3fbf7f8', '18.188.175.182', '1713288731', '1713288731', '/shopping_cart.php')

[XT SQL Error]