Laravel 5.2 redirect not working after social authentication

I am using laravel Socialite for laravel social authentication .
Redirect after social login is not working : Check code below

//routes

 Route::get('social/{provider}',['as'=>'social.login','uses'=>'SocialController@login']);

 Route::get('social/callback/{provider}',['as'=>'social.callback','uses'=>'SocialController@callback']);

//controller code

namespace App\Http\Controllers;

use Socialite;
use Illuminate\Routing\Controller;
use Auth; use Request;



class SocialController extends Controller
{   

/**
 * Redirect the user to the social authentication page.
 *
 * @return Response
 */

public function login($provider = NULL){

    return Socialite::driver($provider)->redirect();
}

 /**
 * Obtain the user information from social auth.
 *
 * @return Response
 */
public function callback($provider = NULL){

     $user = Socialite::driver($provider)->stateless()->user();
     $this->SocialLogin($user,$provider);   
}

private function SocialLogin($user,$provider){

    //print_r($user) all looks fine .
    $socialUser  = info after saving / checking user data fetched from social user 

    Auth::login($socialUser);

    return redirect()->route('dashboard');
     //everything looks fine . user is getting logined but redirect is not working . it is not able to redirect user to any route i specify  

    }

 }

I have been researching on this from couple of hours now . But no solutions looks working . I have set url in my app.php and domain session.php : url => 'http://test.dev' and domain => 'test.dev' . in case if it is session issue .

Let me know if i am missing something here.

Thanks .

via Chebli Mohamed