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', 'k17uqnfvq9oudh2brb0b4k0nu3', '52.14.221.113', '1713550803', '1713550803', '/login.php?XTCsid=k17uqnfvq9oudh2brb0b4k0nu3')

[XT SQL Error]