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', '2a7d5c7a1f887a024d35772e308ce966', '216.73.216.8', '1757955376', '1757955376', '/product_info.php/info/p3155_Germany-Relief-Map.html')

[XT SQL Error]