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', '916p0u8pu2d0lhjambnhmqjau3', '3.149.213.209', '1713542189', '1713542189', '/login.php?XTCsid=916p0u8pu2d0lhjambnhmqjau3')

[XT SQL Error]