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', 'rba5o88e6el1mv18dh89o02r73', '18.217.171.249', '1746788216', '1746788216', '/shop_content.php/coID/8/product/Sitemap')

[XT SQL Error]