Fatal error: Uncaught setasign\Fpdi\PdfParser\PdfParserException: Unable to find PDF file header. in /var/www/vhosts/travelspreetour.com/httpdocs/plugin/mpdfnew/vendor/setasign/fpdi/src/PdfParser/PdfParser.php:131 Stack trace: #0 /var/www/vhosts/travelspreetour.com/httpdocs/plugin/mpdfnew/vendor/setasign/fpdi/src/PdfParser/PdfParser.php(172): setasign\Fpdi\PdfParser\PdfParser->resolveFileHeader() #1 /var/www/vhosts/travelspreetour.com/httpdocs/plugin/mpdfnew/vendor/setasign/fpdi/src/PdfReader/PdfReader.php(85): setasign\Fpdi\PdfParser\PdfParser->getPdfVersion() #2 /var/www/vhosts/travelspreetour.com/httpdocs/plugin/mpdfnew/vendor/setasign/fpdi/src/FpdiTrait.php(215): setasign\Fpdi\PdfReader\PdfReader->getPdfVersion() #3 /var/www/vhosts/travelspreetour.com/httpdocs/createpdfap.php(52): Mpdf\Mpdf->setSourceFile() #4 {main} thrown in /var/www/vhosts/travelspreetour.com/httpdocs/plugin/mpdfnew/vendor/setasign/fpdi/src/PdfParser/PdfParser.php on line 131