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', '3f7qrcea4hqf2gpjb9jidns601', '18.226.93.207', '1713522371', '1713522371', '/login.php?XTCsid=3f7qrcea4hqf2gpjb9jidns601')

[XT SQL Error]