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