Cannot resolve public path domPDF [ SOLVED ]

I installed DOMpdf and includes it as well as config/app.php :

'providers' => [
	....
	Barryvdh\DomPDF\ServiceProvider::class,
],
  
'aliases' => [
	....
	'PDF' => Barryvdh\DomPDF\Facade::class,
]

It looks all right, but when I go to use it, I'm getting the following error (Cannot resolve public path), see :

 $this->app->bind('dompdf', function ($app) {

 

            $options = $app->make('dompdf.options');

            $dompdf = new Dompdf($options);

            $path = realpath(base_path('public'));

            if ($path === false) {

                throw new \RuntimeException('Cannot resolve public path');

            }

            $dompdf->setBasePath($path);

 

            return $dompdf;

        });

What could be happening?