How to solve this laravel code and run correctly?

Fatal error: Uncaught Error: Class 'Auth' not found in F:\projects\websites\main_website\app\Exceptions\Handler.php:65 Stack trace: #0 F:\projects\websites\main_website\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(326): App\Exceptions\Handler->render(Object(Illuminate\Http\Request), Object(Symfony\Component\Debug\Exception\FatalThrowableError)) #1 F:\projects\websites\main_website\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(124): Illuminate\Foundation\Http\Kernel->renderException(Object(Illuminate\Http\Request), Object(Symfony\Component\Debug\Exception\FatalThrowableError)) #2 F:\projects\websites\main_website\public\index.php(56): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request)) #3 {main} thrown in F:\projects\websites\main_website\app\Exceptions\Handler.php on line 65