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', 'cf109ab82b10d77dcb9ccd325805f57a', '216.73.216.20', '1771725388', '1771725388', '/product_info.php?info=p1536_Tuerkei-Satellitenbild.html')

[XT SQL Error]