Fatal error: Uncaught Error: Class "setasign\Fpdi\PdfParser\CrossReference\AbstractReader" not found in /home/ldt/public_html/canvas/udoit/vendor/setasign/fpdi/src/PdfParser/CrossReference/LineReader.php:22 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/setasign/fpdi/src/PdfParser/CrossReference/LineReader.php on line 22