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', 'ddfb98eaa50834829bd2984cd82c058a', '50.17.63.57', '1711715568', '1711715568', '/checkout_shipping.php?XTCsid=41d98929aac05a618616c6b9cf3dbbec')

[XT SQL Error]