1366 - Incorrect integer value: '' for column `shop_db3`.`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', '2ce37851419e2ac3df1df86ec6078a42', '3.16.83.150', '1713499974', '1713499974', '/product_info.php?language=de&info=p247_Nessun-Dorma.html&XTCsid=5e10770c3e5d1353aa8ec3f7bd33fee6')

[XT SQL Error]