Fatal error: Uncaught Error: Class 'setasign\Fpdi\PdfParser\CrossReference\AbstractReader' not found in /var/www/html/tcpdf/fpdi2/src/PdfParser/CrossReference/FixedReader.php:23 Stack trace: #0 {main} thrown in /var/www/html/tcpdf/fpdi2/src/PdfParser/CrossReference/FixedReader.php on line 23