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', '320aa513e879d69b9aba30f701c53020', '216.73.216.116', '1752390570', '1752390570', '/product_info.php/language/de/info/p1727_Die-Bahamas-3-Satellitenbild.html')

[XT SQL Error]