1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', 'd7f2e5c9f74bf44aa0ee7471c21f14fb', '216.73.216.220', '1769791471', '1769791471', '/product_info.php/info/p2606_Australien-Reliefkarte.html')

[XT SQL Error]