Can't create any group as administrator (self-managed GitLab)

Hello!

I am using gitlab 15.6.6-ee, installed via docker (docker-compose).

As an admin, I would like to create groups (getting an error message after updating to 15.6.6-ee). Error message when creating a group: "You don’t have permission to create groups."

I have tried to update to latest GitLab version in our QA Server with same issue.