Register Error

permisi gan, saya mau tanya. saya bikin registrasi pake

 php artisan make:auth

tp knapa jadi error begini ya

 Type error: Argument 1 passed to Illuminate\Auth\SessionGuard::login() must implement interface Illuminate\Contracts\Auth\Authenticatable, null given, called in D:\laragon\www\undangandari\app\Http\Controllers\Auth\RegisterController.php on line 84

kalo saya hapus code ini

 $this->guard()->login($user);

di registercontroller, baru berfungsi

tp saya butuh kode itu, supaya setelah register langsung kondisi login

========================== registerController.php

<?php

namespace App\Http\Controllers\Auth;

use App\User;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Validator;
use Illuminate\Foundation\Auth\RegistersUsers;
use Illuminate\Http\Request;
use Illuminate\Auth\Events\Registered;

use Illuminate\Support\Facades\Mail;
use App\Mail\userRegistered;

class RegisterController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Register Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles the registration of new users as well as their
    | validation and creation. By default this controller uses a trait to
    | provide this functionality without requiring any additional code.
    |
    */

    use RegistersUsers;

    /**
     * Where to redirect users after registration.
     *
     * @var string
     */
    // protected $redirectTo = '/dashboard';

    public function redirectTo()
    {
        if ($this->request->has('previous')) {
            $this->redirectTo = $this->request->get('previous');
        }

        return $this->redirectTo ?? '/dashboard';
    }
    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct(Request $request)
    {
        $this->middleware('guest');
          $this->request = $request;
    }

    /**
     * Get a validator for an incoming registration request.
     *
     * @param  array  $data
     * @return \Illuminate\Contracts\Validation\Validator
     */
    protected function validator(array $data)
    {
        return Validator::make($data, [
            'name' => 'required|string|max:255',
            'email' => 'required|string|email|max:255|unique:users',
            'password' => 'required|string|min:6|confirmed',
        ]);
    }

     /**
     * Handle a registration request for the application.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */

    public function register(Request $request)
    {
        $this->validator($request->all())->validate();
        event(new Registered($user = $this->create($request->all())));
        $this->guard()->login($user); //ini kalo di hapus bisa
     return redirect($this->redirectPath());
    }

        // return $this->registered($request, $user)
        //                 ?: redirect('/login')->with('warning', 'cek email');

    /**
     * Create a new user instance after a valid registration.
     *
     * @param  array  $data
     * @return \App\User
     */
    protected function create(array $data)
    {
        $user = User::create([
            'name' => $data['name'],
            'email' => $data['email'],
            'password' => bcrypt($data['password']),
            'token'=> str_random(20)
        ]);

        //email verifikasi
        Mail::to($user->email)->send(new userRegistered($user));
    }

//verifikasi token
    public function verify_register($token, $id)
    {
        $user = User::find($id);

        if ($user->token != $token) {
            return redirect('login')->with('warning', 'token ga cocok');
        }

        $user->status=1;
        $user->save();

        // $this->guard()->login($user);
        return redirect('dashboard')->with('success', 'selamat datang');

    }
}

terima kasih