Fatal error: Uncaught Error: Class "Dompdf\Positioner\AbstractPositioner" not found in /home/sabdesenv/public_html/includes/sertin/dompdf/src/Positioner/Block.php:19 Stack trace: #0 {main} thrown in /home/sabdesenv/public_html/includes/sertin/dompdf/src/Positioner/Block.php on line 19