Fatal error: Uncaught Error: Call to undefined function Dompdf\mb_internal_encoding() in /var/www/html/vendor/dompdf/dompdf/src/Dompdf.php:275 Stack trace: #0 /var/www/html/system/BaseView.php(300): Dompdf\Dompdf->__construct() #1 /var/www/html/index.php(98): BaseView->render('errors/error_se...', Object(Error), 'info_layout.php') #2 [internal function]: exception_handler(Object(Error)) #3 {main} thrown in /var/www/html/vendor/dompdf/dompdf/src/Dompdf.php on line 275