Our tests found a bug with the current version of master, that was introduced by the commit 9ad1316990cf54da665546ad2dff367557b98262.
It is throwing an error when the server starts up and returns an error message of None, and thereby breaking the happy path. There is a function ('create' around line 587) in servers/__init__.py that checks against the attribute 'decode', which the server doesn't have when there isn't an error message.
