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', '9b502fd4d95b98886afbcb3e3bf7faad', '18.117.158.47', '1714156559', '1714156559', '/product_info.php?info=p255_Andr--Carol---Silhouetten.html&XTCsid=fbf10991e93a5b1cee6d3cdc21485899')

[XT SQL Error]