1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', 'rltq7eadegu9i0sge84kbnrj17', '216.73.217.7', '1751515635', '1751515635', '/shop_content.php/coID/14')

[XT SQL Error]