Hi @cpruneau,
I’m afraid this might be an issue with homebrew - we’ve recently had another person reporting issues: Uninstall ROOT using homebrew.
We do not maintain it so it’s hard to say what might be wrong there. Maybe you could try to install root in another way - either with the provided binaries or from source, here is some more detail: Installing ROOT - ROOT and if your issue remains we can start there?
Cheers,
Marta