Laravel 5.2 Cashier, Stripe & Dompdf Error

Good evening!

I recently build a small project for a company, and decided to use Laravels Cashier package. Everything runs smoothly, but I ran into an error today, when trying to output/download the paying users invoice.

FatalErrorException in Invoice.php line 248:
Class 'DOMPDF' not found

I then decided to make a quick Google search, but no one seems to have some kind of solution to this. Im using the Latest version of Laravel, just recently updated the whole server, and the same goes with Cashier and Dompdf (freshly installed).

Invoice.php line 248:

 public function pdf(array $data)
    {
        if (! defined('DOMPDF_ENABLE_AUTOLOAD')) {
            define('DOMPDF_ENABLE_AUTOLOAD', false);
        }

        if (file_exists($configPath = base_path().'/vendor/dompdf/dompdf/dompdf_config.inc.php')) {
            require_once $configPath;
        }

        $dompdf = new \DOMPDF;

        $dompdf->load_html($this->view($data)->render());

        $dompdf->render();

        return $dompdf->output();
    }

Best regards