ruby' is not recognized as an internal or external command, operable program or batch file. (Example) | Treehouse Community
![macos - Why is ruby -v still showing version 2.0.0 even after successfully installing ruby 2.5.3? - Stack Overflow macos - Why is ruby -v still showing version 2.0.0 even after successfully installing ruby 2.5.3? - Stack Overflow](https://i.stack.imgur.com/PD9kT.png)
macos - Why is ruby -v still showing version 2.0.0 even after successfully installing ruby 2.5.3? - Stack Overflow
Can't remove ruby, want to reinstall particular version because cannot run, test app, errors · Issue #2959 · rvm/rvm · GitHub
![C:/URBANopt-cli-0.9.0/gems/ruby/2.7.0/gems/urbanopt-geojson-0.9.0/lib/urbanopt/geojson/feature.rb:277:in `block in find_feature_center': undefined method `/' for #<Array:0x000000000aec6af8> (NoMethodError) - scripting - Ladybug Tools | Forum C:/URBANopt-cli-0.9.0/gems/ruby/2.7.0/gems/urbanopt-geojson-0.9.0/lib/urbanopt/geojson/feature.rb:277:in `block in find_feature_center': undefined method `/' for #<Array:0x000000000aec6af8> (NoMethodError) - scripting - Ladybug Tools | Forum](https://discourse.ladybug.tools/uploads/default/optimized/3X/f/9/f92a9a68b9f79c10af1312399ed3d7812671b106_2_1023x440.png)