TypeError: Drupal\group\Plugin\GroupContentEnablerBase::createAccess(): Argument #1 ($group) must be of type Drupal\group\Entity\GroupInterface, null given

On a site with Group newly installed, I ran into this fatal error as well.

I should add that my site has Entity Clone installed, and the patch at 🐛 Group error createAccess() must implement interface Drupal\group\Entity\GroupInterface, null given Needs review resolved my error. So, I think this is not really a problem with Group, but it's worth leaving this issue open in the Group queue to help people who encounter this error find their way to the solution.

but it's worth leaving this issue open in the Group queue to help people who encounter this error find their way to the solution.

Totally worth it, thanks !