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', 'af14ed20c65fef099cc1d3acaf62f7de', '216.73.216.191', '1758216524', '1758216524', '/product_info.php/info/p1629_Bulgaria-Satellite-Image.html')

[XT SQL Error]