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', 'c3c1e3f4518004815f9bb010a6d09746', '18.188.66.13', '1714065696', '1714065696', '/checkout_shipping.php?XTCsid=c369fbc9bc0a436cd7cf3685aed78598')

[XT SQL Error]