godrick37

I encountered this error when typing this command line "gem install faml -v '0.8.1' --source 'https://rubygems.org/'". I run Windows 10 x64 19042 and Ruby 2.5.1 (x64). current directory: D:/lib/Ruby25-x64/lib/ruby/gems/2.5.0/gems/faml-0.8.1/ext/attribute_builder D:/lib/Ruby25-x64/bin/ruby.exe...