Yes, I think that means you are using a different version of TF. It looks like you are running the notebook on your own computer, so you will need to make sure you’re using the same versions of all packages if you want to get smooth sailing. Everything mutates really fast in this space. This is a non-trivial process and there are no “official” instructions. You’re on your own if you want to use an environment different than the course website, but here’s a thread from a fellow student with a lot of helpful pointers about how to get this to work.