1366 - Incorrect integer value: '' for column `hbl_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', '7cf1h3amdgbs8cdu19gurd8og2', '18.218.131.147', '1746940385', '1746940385', '/shop_content.php?coID=8')

[XT SQL Error]