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', '31be199f18b6061ffcd84b072357f548', '216.73.216.65', '1752612151', '1752612151', '/product_info.php/info/p4004_Africa-Relief-Map.html')

[XT SQL Error]