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', '709f0dca7570be1d26337ea3ed20a68a', '216.73.216.8', '1758111587', '1758111587', '/product_info.php/language/de/info/p3980_Afrika-Satellitenbild.html')

[XT SQL Error]