I\'ve cloned my app from Github but I\'ve got errors on Gemfile. So I think, this app. is still running on heroku and it said that all up to date when I\'ve used following comma
I did not get this error using Ruby 2.4.1. I did get the same error when I changed versions to 1.9.3, as specified in the Gemfile. I also don't see a branch called rails3 at the source on Github. I would try removing the branch option first.