Can't install ruby-debug-base19x gem

Question

When I try to install ruby-debug-base19x gem for debug my application using the RubyMine IDE I received the below error message, can anybody help me?

I\'m using Mac

Answer 1

I had the wrong ruby version set in rubymine; in the menu bar go to "Rubymine" -> "preferences" -> "Ruby SDK and Gems" and make sure it is pointed to the version of Ruby you are expecting.

Found this idea here: https://stackoverflow.com/a/21056201/1462575