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', '9qm7b31vh7kitunmci8tar8s47', '18.191.195.110', '1713621208', '1713621208', '/login.php?XTCsid=9qm7b31vh7kitunmci8tar8s47')

[XT SQL Error]