Fatal error: Uncaught Error: Class "Endroid\QrCode\Writer\AbstractWriter" not found in /home/app/htdocs/v2.2.3/vendor/endroid/qr-code/src/Writer/FpdfWriter.php:17 Stack trace: #0 {main} thrown in /home/app/htdocs/v2.2.3/vendor/endroid/qr-code/src/Writer/FpdfWriter.php on line 17