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', 'beccb3ec7b9f53fe15752e33cef8af3d', '216.73.216.20', '1771725381', '1771725381', '/product_info.php?info=p3294_Die-Bahamas-Reliefkarte.html')

[XT SQL Error]