Fatal error: Uncaught Error: Class "Knp\Snappy\AbstractGenerator" not found in C:\xampp\htdocs\omr_backend\vendor\knplabs\knp-snappy\src\Knp\Snappy\Pdf.php:11 Stack trace: #0 {main} thrown in C:\xampp\htdocs\omr_backend\vendor\knplabs\knp-snappy\src\Knp\Snappy\Pdf.php on line 11