page not found

I am working on a project from laravel 5.4 to the latest version...everything was okey until using request to navbar.blade.php:

<li class="{{Request::is('home') ? 'active' : ''}}"><a href="/home">Home</a></li>
        <li class="{{Request::is('about') ? 'active' : ''}}"><a href="/about">About</a></li>
        <li class="{{Request::is('contact') ? 'active' : ''}}"><a href="/contact">Contact</a></li>

My routes are:

Route::get('/home', 'PagesController@getHome');
Route::get('/about', 'PagesController@getAbout');
Route::get('/contact', 'PagesController@getContact');
Route::get('/messages', 'MessagesController@getMessages');
Route::post('/contact/submit', 'MessagesController@submit');

My pagesController:

class PagesController extends Controller
{
    public function getHome(){
        return view('/home');
    }
    public function getAbout(){
        return view('/about');
    }
    public function getContact(){
        return view('/contact');
    }
}

I used: composer dumpautoload && php artisan view:clear && php artisan cache:clear && php artisan route:clear && php artisan config:clear

I tryed to make routes to laravel 8 version: '''https://laravel.com/docs/8.x/routing'''

I did everything...

My routeserviceprovider:

            Route::prefix('api')
                ->middleware('api')
                ->namespace($this->namespace)
                ->group(base_path('routes/api.php'));

            Route::middleware('web')
                ->namespace($this->namespace)
                ->group(base_path('routes/web.php'));
        });
}```