Fatal error: Uncaught Error: Class 'chillerlan\QRCode\Data\QRMatrix' not found in C:\xampp\htdocs\vendor\chillerlan\php-qrcode\src\Decoder\BitMatrix.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\chillerlan\php-qrcode\src\Decoder\BitMatrix.php on line 22