Auth.password class is not found

Laravel version: 5.1

This is a project which started in L4.2. I upgraded it to L5.1 and I am trying to fix issues. The app has its own password reset functionality which utilizes laravel reset() function.

I am trying to call Password::reset() but I am getting the error of password reset class is not found. I have the Illuminate\Auth\Passwords\PasswordResetServiceProvider::class and alias password registered in config app file but I am still getting the error auth.password class not found.

via Chebli Mohamed