Fatal error: Uncaught Error: Class 'setasign\Fpdi\PdfParser\CrossReference\AbstractReader' not found in C:\xampp\htdocs\admin\vendor\setasign\fpdi\src\PdfParser\CrossReference\FixedReader.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\setasign\fpdi\src\PdfParser\CrossReference\FixedReader.php on line 22