Not Showing Validation Message in blade

I have the following function below that is logging in fine and redirecting fine in both options however I am not getting any errors!! What have I missed?

Blade:

   <div>
      
      

       <div class="invalid-feedback"></div>

Function:

public function processLogin() {

    // Lets create some simple validation rules for login

    $rules = array(

        'username' => 'required',
        'password' => 'required',
    );

    // Lets check the guest filled in all the correct details :)

    $validator = Validator::make(Input::all(), $rules);

    // Lets redirect back to login page if they have not

    if ($validator->fails()) {
        return Redirect::to('/')
            ->withErrors($validator)
            ->withInput(Input::except('password')); //Sends back only room name
    } else {
        // We will create an array of login information :)

        $loginData = array(
            'username' => Input::get('username'),
            'password' => Input::get('password'),
        );

        // Lets Login

        if (Auth::attempt($loginData)) {
            // If they logged in correct lets give them this :)

            return Redirect::away('https://google.co.nz/');
        } else {
            // If not they can have this

            return Redirect::to('/');
        }
    }

via Chebli Mohamed