Fatal error: Uncaught Error: Class "setasign\Fpdi\FpdiException" not found in /opt/lampp/htdocs/msjchat/vendor/setasign/fpdi/src/PdfParser/PdfParserException.php:18 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/msjchat/vendor/setasign/fpdi/src/PdfParser/PdfParserException.php on line 18