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', 'dcb49f4ba3fc0bdb6b1c49e37e3e1562', '216.73.216.116', '1752280101', '1752280101', '/product_info.php/info/p2652_Spain-Relief-Map.html')

[XT SQL Error]