Comment 2 for bug 1618998

If I'm reading that bug correctly this is the same situation as listed in case #2.

I am not currently logged into a controller but there is an available controller that has already been registered. simply running `juju register` just gives me an error which isn't ideal either. To be able to find the other controllers I can connect to I need to run `juju controllers`.

$ juju register
  error: registration data missing