Fatal error: Uncaught exception 'Mpdf\MpdfException' with message 'Unable to set PDF file protection, CSPRNG Functions are not available. Use paragonie/random_compat polyfill or upgrade to PHP 7.' in /vendor/mpdf/mpdf/src/Pdf/Protection/UniqidGenerator.php:11 Stack trace: #0 /vendor/mpdf/mpdf/src/ServiceFactory.php(68): Mpdf\Pdf\Protection\UniqidGenerator->__construct() #1 /vendor/mpdf/mpdf/src/Mpdf.php(1054): Mpdf\ServiceFactory->getServices(Object(Mpdf\Mpdf), Object(Psr\Log\NullLogger), Array, 0, Object(Mpdf\Language\LanguageToFont), Object(Mpdf\Language\ScriptToLanguage), NULL, NULL, NULL, NULL) #2 /controllers/pdf.php(63): Mpdf\Mpdf->__construct(Array) #3 /index.php(123): include_once('/controllers/pd...') #4 {main} thrown in /vendor/mpdf/mpdf/src/Pdf/Protection/UniqidGenerator.php on line 11