Fatal error: Uncaught Error: Class 'Dompdf\Positioner\AbstractPositioner' not found in /home/kingelearn/public_html/vendor/dompdf/dompdf_old/src/Positioner/Fixed.php:17
Stack trace:
#0 {main}
thrown in /home/kingelearn/public_html/vendor/dompdf/dompdf_old/src/Positioner/Fixed.php on line 17