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', '27735b6f542a344420e6e0acdead0a02', '18.218.38.125', '1713496402', '1713496402', '/checkout_shipping.php?XTCsid=0d9ee48a6a0ef54d70661006a72a5ec7')

[XT SQL Error]