1366 - Incorrect integer value: '' for column `creatihu_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', '44373a0d06750b93a7dfe4efd9ee50e1', '3.17.150.163', '1714009157', '1714009157', '/shop_content.php?coID=1')

[XT SQL Error]