Fatal error: Uncaught Error: Class 'Knp\Snappy\AbstractGenerator' not found in /opt/lampp/htdocs/us/vendor/knplabs/knp-snappy/src/Knp/Snappy/Pdf.php:12 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/us/vendor/knplabs/knp-snappy/src/Knp/Snappy/Pdf.php on line 12