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', 'd99b67d2a87c7fc4eeb08678f764ee77', '216.73.216.130', '1767848148', '1767848148', '/product_info.php/info/p1827_Northern-Mariana-Is--Satellite-Image.html')

[XT SQL Error]