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', 'bhoomhbglncce1rgq0su9plj56', '3.135.198.49', '1713605510', '1713605510', '/login.php?XTCsid=bhoomhbglncce1rgq0su9plj56')

[XT SQL Error]