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', '0vf7l0dj5s09dvh0dnp31g7lm5', '18.224.149.242', '1714029696', '1714029696', '/login.php?XTCsid=0vf7l0dj5s09dvh0dnp31g7lm5')

[XT SQL Error]