Fatal error: Uncaught Mpdf\MpdfException: Temporary files directory "/var/www/html/vendor/mpdf/mpdf/src/Config/../../tmp/mpdf" is not writable in /var/www/html/vendor/mpdf/mpdf/src/Cache.php:21 Stack trace: #0 /var/www/html/vendor/mpdf/mpdf/src/ServiceFactory.php(67): Mpdf\Cache->__construct('/var/www/html/v...', 3600) #1 /var/www/html/vendor/mpdf/mpdf/src/Mpdf.php(1084): Mpdf\ServiceFactory->getServices(Object(Mpdf\Mpdf), Object(Psr\Log\NullLogger), Array, Object(Mpdf\Language\LanguageToFont), Object(Mpdf\Language\ScriptToLanguage), NULL, NULL, NULL, NULL) #2 /var/www/html/testpdf.php(29): Mpdf\Mpdf->__construct(Array) #3 {main} thrown in /var/www/html/vendor/mpdf/mpdf/src/Cache.php on line 21