LDAP UserId resolver not being saved


I am experimenting with LDAP UserID resolver. I have an AWS Microsoft AD running and I after entering the LDAP details, I can see that test passes but when I try to save the resolver, I see that no resolver has been saved.

privacyIDEA version: 3.1


Too few information.
May you have not entered all necessary data to save the resolver.
Was a request sent to privacyIDEA?
What does the audit log say?

See my reply on GitHub. https://github.com/privacyidea/privacyidea/issues/1857#issuecomment-533045123