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', '33fec0a14f0f2bd648994c6c33b4c2fa', '18.222.125.171', '1713881231', '1713881231', '/shopping_cart.php?XTCsid=3a57a77cceb215ec6cb91829f992c301')

[XT SQL Error]