1366 - Incorrect integer value: '' for column `hbl_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', '01jdhgngrj5h5n0pjhn6q7sj41', '3.145.177.28', '1746964860', '1746964860', '/product_info.php?info=p86_802462-Badeofen-Mischbatterie--drucklos.html')

[XT SQL Error]