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', 'a11d8fcf6b606799dda27b9351661ed4', '3.143.168.172', '1713624035', '1713624035', '/checkout_shipping.php?XTCsid=3a57a77cceb215ec6cb91829f992c301')

[XT SQL Error]