1366 - Incorrect integer value: '' for column `usr_web74_1`.`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', '4t2ev8884b7t6r37bvs516gkr0', '216.73.216.9', '1761932653', '1761932653', '/shop_content.php?coID=11')

[XT SQL Error]