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', 'p79bl7l0co1nq06r2ng7k3eke4', '3.141.24.158', '1746955983', '1746955983', '/product_info.php?info=p625_804367-Kartoffeldaempfer--Futterdaempfer-100-Liter--teilverzinkt.html')

[XT SQL Error]