How to visualize with dompdf in laravel

Good morning, I have a problem I can not see the pdf and it does not show me an error This is my license plate controller

  $reporte_mat= new PdfController();
  $reporte_mat->crear_reporte_matricula(1);

This is my driver PdfController ()

      public function crearPDF($datos,$vistaurl,$tipo)
{

    $data = $datos;
    $date = date('Y-m-d');
    $view =  \View::make($vistaurl, compact('data','date'))->render();
    $pdf = \App::make('dompdf.wrapper');
    $pdf->loadHTML($view)->setPaper('a4', 'portrait'); 

    if($tipo==1){return $pdf->stream('reporte');}
    if($tipo==2){return $pdf->download('reporte.pdf'); }
}

public function crear_reporte_matricula($tipo){

 $vistaurl="pdf.reporte_comprob_mat";
 $user=User::all();
  return $this->crearPDF($user, $vistaurl,$tipo);
}