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', 'aba28d69d2dcf1d7eb4be56f8cb9c34a', '216.73.216.108', '1763382960', '1763382960', '/product_info.php/info/p3988_Asien-Reliefkarte.html')

[XT SQL Error]