Too few arguments to function Drupal\Core\Form\ConfigFormBase::__construct()

Working on it.

The ConfigFormBase constructor was changed starting in Drupal core 10.2, so the HTML Mail configuration form won't work in any currently supported version of Drupal core.

🌱 The future of the HTML Mail module Needs review

I've updated the HtmlConfigurationFormForm.php with backward compatibility. pls check.

Hi @arunsahijpal
The MR worked in my D11 site.