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', '976758bdd35d3d27961d0bc902996975', '3.141.24.134', '1713931293', '1713931293', '/shopping_cart.php?XTCsid=a33edcfe7a4d0f8d478a4ad1978f2859')

[XT SQL Error]