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', '426cf9db5a9edb6efd4257def30ce443', '3.139.86.56', '1714194714', '1714194714', '/shop_content.php?coID=9&XTCsid=887fff7384999e8c958f14224ebe6b7c')

[XT SQL Error]