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', 'ldvjulc5a6igh0mhcf3uofk417', '3.237.65.102', '1711642229', '1711642229', '/login.php?XTCsid=ldvjulc5a6igh0mhcf3uofk417')

[XT SQL Error]