2.4.4
First, check your ruby version
ruby -v
If its not 2.4.4, you can change it with RVM
\curl -sSL https://get.rvm.io | bash
(You might need to load RVM - replacing USER with your system)
/Users/USER/.rvm/bin/rvm
Then...
rvm requirements
rvm install 2.4.4
rvm use 2.4.4 --default
Next, check for and/or install bundler
bundler -v
gem install bundler
From the project directory
bundle
bin/rails db:migrate RAILS_ENV=development
And then run the rails server
rails server
And then you should be able to view the project at http://localhost:3000/