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', 'rnhnchgkgftvpo853vos88sgn1', '18.119.125.135', '1713468406', '1713468406', '/login.php?XTCsid=rnhnchgkgftvpo853vos88sgn1')

[XT SQL Error]