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', 'cb08309b148395f7befabfc50501b803', '3.145.60.29', '1714193560', '1714193560', '/index.php?cat=c99_Glasprint.html')

[XT SQL Error]