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', '6ae091752338402f9ab68065326141c6', '3.16.70.101', '1713615476', '1713615476', '/index.php?cat=c49_Gro--plakate.html')

[XT SQL Error]