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', '1718730252', '1718730252', '/shopping_cart.php?cat=c458_%D0%9A%D0%B0%D0%B1%D0%B5%D0%BB%D0%B8%20VGA%2C%20DVI%2C%20HDMI.html&page=5&stock=all&view=ext')

[XT SQL Error]