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', '848c5f8e7e430a8a33f1e018f7a4cc37', '18.191.5.239', '1713500559', '1713500559', '/product_info.php?info=p255_Andr--Carol---Silhouetten.html&XTCsid=4a502cf522b059da09cfca377185d405')

[XT SQL Error]