Laravel Class 'App\FBLogin\authlogin' not found

I created a new FBLogin.php file in App Folder, added class:

namespace App\FBLogin;
class authlogin {}

Now i want to use this class in my Controller File, so i added:

use App\FBLogin\authlogin;

Now when i am trying to use this class authlogin, it is showing me error Class 'App\FBLogin\authlogin' not found

Is there something i am doing wrong?
Laravel Version: 5.5

via Chebli Mohamed