Comment 3 for bug 1993533

Pylibjuju 2.9.8 is not compatible with juju 3.0. You'll need at least libjuju 3.0.0. I suggest using the latest one. In fact, we're currently fixing some of the known issues that popped up recently and we're about the make a new release very soon with those fixes, so updating libjuju in couple days to 3.0.3 (is what we'll be releasing) should fix your problems.

Keep in mind that with the major version bump there might be some user code that needs to be adapted. Feel free to ping us on MM or file a bug on libjuju in that case.