1366 - Incorrect integer value: '' for column `shop_db3`.`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', '35e0d3358f1f9de04d99701ced70735f', '18.117.137.64', '1713567854', '1713567854', '/shopping_cart.php?XTCsid=887fff7384999e8c958f14224ebe6b7c')

[XT SQL Error]