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', '6ad35846db946a936822e6ece827c498', '18.117.107.90', '1713526665', '1713526665', '/index.php?cat=c45_Digitaldruck-Plakat--Fotopapier.html')

[XT SQL Error]