1366 - Incorrect integer value: '' for column `db162720`.`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', 'vl2g3d8tpnrk5gsos0vb2rtnf3', '18.188.241.82', '1714139820', '1714139820', '/shop_content.php?coID=4')

[XT SQL Error]