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', 'osj3dkj3qk5ert0nk628p8clo3', '3.145.71.161', '1746784398', '1746784398', '/product_info.php?info=p597_804567-Kochkesseleinsatz-Edelstahl-100-l--mit-Auslauf.html')

[XT SQL Error]