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', '101oaqv1v6s6v2v7ifhkuu40p5', '3.131.93.117', '1746997665', '1746997665', '/index.php?cat=c6_Fuer-Haus-und-Garten.html&page=2')

[XT SQL Error]