the generated pdf is not reading arabic language correctly

I have the same problem, I'm using Opigno Certificate by Arabic Characters, Can u help me to solve it?

You can use phpwkhtmltopdf library https://github.com/mikehaertl/phpwkhtmltopdf

I've added a new font like in: https://www.drupal.org/project/entity_print/issues/3011414 🐛 Dompdf not rendering Russian / cyrillic characters Needs review
and PDF was rendered like this on D11:

try adding a compatible font to your print css