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', 'i00fhk5kj26tp0tjgkrcdg3ij2', '18.188.175.182', '1713303287', '1713303287', '/login.php?XTCsid=i00fhk5kj26tp0tjgkrcdg3ij2')

[XT SQL Error]