User cannot Login after Logout

Hi. I am currently working on a laravel project. I am kind of new to this. Problem is: I am successfully able to register admin or writer account. What I want to do is: I want to create multiple roles login. After immediate registration, I can login with the inputted credentials. But after logout I can't login again. even if I am giving the right credentials. And I am 100% sure that I have given the right credentials. Can anyone please help me? I am trying to fix this for like 2 days now. Thank you. I have uploaded the project in Github for further information.

web.php

Route::view('/', 'welcome');
    Auth::routes();

    Route::get('/login/admin', 'Auth\LoginController@showAdminLoginForm');
    Route::get('/login/writer', 'Auth\LoginController@showWriterLoginForm');
    Route::get('/register/admin', 'Auth\RegisterController@showAdminRegisterForm');
    Route::get('/register/writer', 'Auth\RegisterController@showWriterRegisterForm');

    Route::post('/login/admin', 'Auth\LoginController@check');
    Route::post('/login/writer', 'Auth\LoginController@check');
    Route::post('/register/admin', 'Auth\RegisterController@createAdmin');
    Route::post('/register/writer', 'Auth\RegisterController@createWriter');

    Route::view('/home', 'home')->middleware('auth');
    Route::view('/admin', 'admin');
    Route::view('/writer', 'writer');

LoginController.php

<?php

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Http\Request;
    use Auth;
class LoginController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles authenticating users for the application and
    | redirecting them to your home screen. The controller uses a trait
    | to conveniently provide its functionality to your applications.
    |
    */

    use AuthenticatesUsers;

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

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('guest')->except('logout');
        $this->middleware('guest:admin')->except('logout');
        $this->middleware('guest:writer')->except('logout');
    }
    public function showAdminLoginForm()
    {
        return view('auth.login', ['url' => 'admin']);
    }
    public function showWriterLoginForm()
    {
        return view('auth.login', ['url' => 'writer']);
    }
    public function check(Request $request)
    {
        $this->validate($request, [
            'email'   => 'required|email',
            'password' => 'required|min:6'
        ]);
        $data = Auth::guard('admin')->attempt(['email' => $request->email, 'password' => $request->password]);
        print_r($data);
        exit();

        if (Auth::guard('admin')->attempt(['email' => $request->email, 'password' => $request->password], $request->get('remember'))) {

            return redirect()->intended('/admin');
        }
        if (Auth::guard('writer')->attempt(['email' => $request->email, 'password' => $request->password], $request->get('remember'))) {

            return redirect()->intended('/writer');
        }
        return back()->withInput($request->only('email', 'remember'));
    }
    
}

RedirectIfAuthenticated.php

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Support\Facades\Auth;

class RedirectIfAuthenticated
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @param  string|null  $guard
     * @return mixed
     */
    public function handle($request, Closure $next, $guard = null)
    {
        if ($guard == "admin" && Auth::guard($guard)->check()) {
                return redirect('/admin');
            }
            if ($guard == "writer" && Auth::guard($guard)->check()) {
                return redirect('/writer');
            }
            if (Auth::guard($guard)->check()) {
                return redirect('/home');
            }

            return $next($request);
    }
}

Handler.php (from app/Exceptions

<?php

namespace App\Exceptions;

use Exception;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use Illuminate\Auth\AuthenticationException;
    use Auth; 

class Handler extends ExceptionHandler
{
    /**
     * A list of the exception types that are not reported.
     *
     * @var array
     */
    protected $dontReport = [
        //
    ];

    /**
     * A list of the inputs that are never flashed for validation exceptions.
     *
     * @var array
     */
    protected $dontFlash = [
        'password',
        'password_confirmation',
    ];

    /**
     * Report or log an exception.
     *
     * @param  \Exception  $exception
     * @return void
     */
    public function report(Exception $exception)
    {
        parent::report($exception);
    }

    /**
     * Render an exception into an HTTP response.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Exception  $exception
     * @return \Illuminate\Http\Response
     */
    public function render($request, Exception $exception)
    {
        return parent::render($request, $exception);
    }
    protected function unauthenticated($request, AuthenticationException $exception)
        {
            if ($request->expectsJson()) {
                return response()->json(['error' => 'Unauthenticated.'], 401);
            }
            if ($request->is('admin') || $request->is('admin/*')) {
                return redirect()->guest('/login/admin');
            }
            if ($request->is('writer') || $request->is('writer/*')) {
                return redirect()->guest('/login/writer');
            }
            return redirect()->guest(route('login'));
        }
}

@extends('layouts.app')

@section('content')
<div class="container">
    <div class="row justify-content-center">
        <div class="col-md-8">
            <div class="card">
                <div class="card-header">{{ isset($url) ? ucwords($url) : ""}} {{ __('Login') }}</div>

                <div class="card-body">
                        @isset($url)
                        <form method="POST" action='{{ url("login/$url") }}' aria-label="{{ __('Login') }}">
                        @else
                        <form method="POST" action="{{ route('login') }}" aria-label="{{ __('Login') }}">
                        @endisset
                            @csrf

                        <div class="form-group row">
                            <label for="email" class="col-md-4 col-form-label text-md-right">{{ __('E-Mail Address') }}</label>

                            <div class="col-md-6">
                                <input id="email" type="email" class="form-control @error('email') is-invalid @enderror" name="email" value="{{ old('email') }}" required autocomplete="email" autofocus>

                                @error('email')
                                    <span class="invalid-feedback" role="alert">
                                        <strong>{{ $message }}</strong>
                                    </span>
                                @enderror
                            </div>
                        </div>

                        <div class="form-group row">
                            <label for="password" class="col-md-4 col-form-label text-md-right">{{ __('Password') }}</label>

                            <div class="col-md-6">
                                <input id="password" type="password" class="form-control @error('password') is-invalid @enderror" name="password" required autocomplete="current-password">

                                @error('password')
                                    <span class="invalid-feedback" role="alert">
                                        <strong>{{ $message }}</strong>
                                    </span>
                                @enderror
                            </div>
                        </div>

                        <div class="form-group row">
                            <div class="col-md-6 offset-md-4">
                                <div class="form-check">
                                    <input class="form-check-input" type="checkbox" name="remember" id="remember" {{ old('remember') ? 'checked' : '' }}>

                                    <label class="form-check-label" for="remember">
                                        {{ __('Remember Me') }}
                                    </label>
                                </div>
                            </div>
                        </div>

                        <div class="form-group row mb-0">
                            <div class="col-md-8 offset-md-4">
                                <button type="submit" class="btn btn-primary">
                                    {{ __('Login') }}
                                </button>

                                @if (Route::has('password.request'))
                                    <a class="btn btn-link" href="{{ route('password.request') }}">
                                        {{ __('Forgot Your Password?') }}
                                    </a>
                                @endif
                            </div>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>
@endsection

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