Your Ruby version is 2.3.1, but your Gemfile specified 2.4.1 when running rails s
问题 I am trying to upgrade from ruby 2.3.0 to 2.4.1. To do this, I did rvm use 2.4.1@my-project --create (I am already using 2.4.1 for another project). I changed the gemfile from ruby "2.3.0" to ruby "2.4.1" , and I ran bundle install. My gemfile.lock correctly changed. However, when trying to run rails s in console, I have the error: Your Ruby version is 2.3.1, but your Gemfile specified 2.4.1 This is not logical because when I am running which ruby I get the following answer : /.rvm/rubies