1366 - Incorrect integer value: '' for column `shop_db3`.`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', '625e72e4d9ce1ab9364efd5f9ef7b1a4', '18.118.254.94', '1714162266', '1714162266', '/shop_content.php?coID=1&XTCsid=842cd293d4e43dd66c33a18be5c47b55')

[XT SQL Error]