Laravel PDF阅读器

I have some problems how to show PDF in Laravel. What I did is: web.php

Route::get('/datenschutz', function() {
        $pdf = \PDF::loadView('pdf.Datenschutzerklarung');
       return $pdf->stream('Datenschutzerklarung.pdf');
    } )->name('getDatenschutzerklärung');

And I have that file in that folder, it loads great, but problem is, file is empty! How I can post as HTML that pdf that I have? I guess I have to convert that file in HTML, but I can't include third part 'pdf converters'.