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', 'jl6r6llppj8phj86sn8m03dpr5', '18.116.62.45', '1713595519', '1713595519', '/login.php?XTCsid=jl6r6llppj8phj86sn8m03dpr5')

[XT SQL Error]