Fatal error: Uncaught Mpdf\MpdfException: Unsupported font type: () in /var/www/html/vendor/mpdf/mpdf/src/Writer/FontWriter.php:438 Stack trace: #0 /var/www/html/vendor/mpdf/mpdf/src/Writer/ResourceWriter.php(113): Mpdf\Writer\FontWriter->writeFonts() #1 /var/www/html/vendor/mpdf/mpdf/src/Mpdf.php(9971): Mpdf\Writer\ResourceWriter->writeResources() #2 /var/www/html/vendor/mpdf/mpdf/src/Mpdf.php(2031): Mpdf\Mpdf->_enddoc() #3 /var/www/html/vendor/mpdf/mpdf/src/Mpdf.php(9462): Mpdf\Mpdf->Close() #4 /var/www/html/viewcontent.php(113): Mpdf\Mpdf->Output() #5 {main} thrown in /var/www/html/vendor/mpdf/mpdf/src/Writer/FontWriter.php on line 438