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', '3a56abe0a74c9227ac7861078c46986e', '216.73.216.110', '1768289010', '1768289010', '/index.php/language/en/cat/c42_Vektorkarten.html')

[XT SQL Error]