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', '2e6ac730ba2211e51f79fd41829a55d8', '3.145.50.83', '1714029030', '1714029030', '/product_info.php?info=p317_Selbstklebende-Folie--3-5-Jahre-transluzent.html')

[XT SQL Error]