Fatal error: Uncaught Error: Class 'chillerlan\QRCode\Output\QROutputAbstract' not found in /home/bucerepful/vendor/chillerlan/php-qrcode/examples/MyCustomOutput.php:17 Stack trace: #0 {main} thrown in /home/bucerepful/vendor/chillerlan/php-qrcode/examples/MyCustomOutput.php on line 17