set custom not found page (success in laravel 5.3)

app\Exceptions\Handler.php

...
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;


/**
 * Render an exception into a response.
 *
 * @param  \Illuminate\Http\Request  $request
 * @param  \Exception  $e
 * @return \Illuminate\Http\Response
 */
public function render($request, Exception $exception)
{
   
   //Add this line for custom Not Found
   if($e instanceof NotFoundHttpException)
    {
        return response()->view('missing', [], 404);
    }
   //end add line
    return parent::render($request, $exception);
}