Plugins » Katello

1) Login to the web ui
2) Administer -> Users
3) Create new
4) Fill out form and note error:

Warning!
too few arguments

If you feel this is an error with Foreman itself, please open a new issue with Foreman ticketing system, You would probably need to attach the Full trace and relevant log entries.
ArgumentError
too few arguments
app/controllers/users_controller.rb:20:in `create'
app/models/concerns/foreman/thread_session.rb:33:in `clear_thread'
lib/middleware/catch_json_parse_errors.rb:9:in `call'