Fatal error: Uncaught Error: Class 'Mpdf\MpdfException' not found in /mnt/www/fwrsxt/vendor/mpdf/mpdf2020/src/QrCode/QrCodeException.php:5 Stack trace: #0 {main} thrown in /mnt/www/fwrsxt/vendor/mpdf/mpdf2020/src/QrCode/QrCodeException.php on line 5