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', 'e2d3f8949c1b676099f909bba0bac6c2', '3.141.24.134', '1713947729', '1713947729', '/index.php?cat=c104_Digitaldruck.html')

[XT SQL Error]