1366 - Incorrect integer value: '' for column `artcom-ug`.`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', 'bdhuf33oe8b5c92alunum9qc45', '18.216.249.66', '1718730255', '1718730255', '/shopping_cart.php?cat=c442_%D0%97%D0%B2%D1%83%D0%BA%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%BA%D0%B0%D1%80%D1%82%D1%8B.html&page=3&stock=all&view=ext')

[XT SQL Error]