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', 'f66e6ee73a6f12ac296b222c32e7b86c', '216.73.216.3', '1766809021', '1766809021', '/product_info.php/info/p1609_Guinea-Satellitenbild.html')

[XT SQL Error]