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', 'e4963b5947cce7514b2108afa494371b', '3.144.189.177', '1714030882', '1714030882', '/product_info.php?info=p319_Selbstklebende-Folie--5-7-Jahre-Carwraping.html')

[XT SQL Error]