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', '7a55487a9ca651b7a9e7d3b0e3322cf1', '216.73.216.44', '1768969431', '1768969431', '/product_info.php/info/p1538_Namibia-Satellite-Image.html')

[XT SQL Error]