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', 'k0smttgdv1fc828bk5hphouj27', '18.116.63.174', '1713928165', '1713928165', '/login.php?XTCsid=k0smttgdv1fc828bk5hphouj27')

[XT SQL Error]