Fatal error: Uncaught Error: Class "chillerlan\QRCode\Output\QROutputAbstract" not found in /var/www/html/servidor-laravel/vendor/chillerlan/php-qrcode/examples/MyCustomOutput.php:17 Stack trace: #0 {main} thrown in /var/www/html/servidor-laravel/vendor/chillerlan/php-qrcode/examples/MyCustomOutput.php on line 17