1366 - Incorrect integer value: '' for column `pella-ware`.`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', '9g1vigm91e3dr195eusa2po2e0', '18.191.211.66', '1713479616', '1713479616', '/login.php?XTCsid=9g1vigm91e3dr195eusa2po2e0')

[XT SQL Error]