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', '8199a7b39cdd9564deb0dd3db6626950', '18.191.108.168', '1713611320', '1713611320', '/product_info.php?info=p318_Selbstklebende-Folie--3-5-Jahre-Rapid-Air.html')

[XT SQL Error]