Can't install fast.ai: "testfixtures"

Part 1 (2018) Beginner (2018)
1

Dear All, I’m trying to install Fast.ai from the Git Repo. I cloned the repo and cd into it. Then did:

“conda env update” or even “conda env create -f environment.yml”

But in both cases I get the error message:

ResolvePackageNotFound:

  • testfixtures

My computer is Fedora Linux 28, I have Python installed but never used conda, actually I have almost no experience with Python.

Thanks for any help!

Ed