I have a problem installing root with hombrew after upgrading macOS on Catalina
I have this error when I tried brew install root: Error: No available formula or cask with the name "root"
I was able to solve it,
I needed to run brew doctor
this will report if there is a problem with brew to be solved
in my case I had: Warning: Broken symlinks were found and Warning: You have uncommitted modifications to Homebrew/homebrew-core
so I solved them with brew cleanup
and cd /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core && git stash && git clean -d -f
then when I run brew install root it works
Thanks!