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', '99606e690a3d4ccb79f87d5800dd10a3', '35.173.233.176', '1711627493', '1711627493', '/checkout_shipping.php?XTCsid=9ed062a1d997e94e67f071e9bc3ac71b')

[XT SQL Error]