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', '252e8378a3793f188d93bf8165ff5854', '216.73.216.8', '1758047938', '1758047938', '/product_info.php/language/en/info/p1610_Japan-Hokkaido-Satellite-Image.html')

[XT SQL Error]