Getting phoenix (https://github.com/phoenixframework/phoenix )
** (Mix) Error fetching/updating Git repository: the “git” executable is not available in your PATH. Please install Git on this machine or pass --no-deps-check if you want to run a previously built application on a system without Git.
Unless you have some legacy code that depends on Erlang 20, don’t downgrade. If anything, you should upgrade to the latest released versions for both erlang and elixir, so people can help you more.