Failed to listen on localhost:8000 (reason: Cannot assign requested address)

When I run on ubuntu

php artisan serve

Laravel development server started on http://localhost:8000/

[Mon Apr 25 10:28:08 2016] Failed to listen on localhost:8000 (reason: Cannot assign requested address)

My hosts file

/etc/hosts/

1 27.0.0.1 localhost

anyone used to face the same this problem , how we can solve this?

via Chebli Mohamed