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', '890349ff700d28a060bd185d85e22bf9', '216.73.216.3', '1767205684', '1767205684', '/product_info.php/info/p3480_Armenien-Reliefkarte.html')

[XT SQL Error]