Installing unf_ext 0.0.7.2 not working

Question

So when I try running bundle install --without production it tells me that I am getting an error and that I need to Make sure that gem install unf_ext -v

Answer 1

What worked for me on macOS was to run: sudo xcode-select -switch /

As detailed in this answer: https://stackoverflow.com/a/57217502/6007104