[graphql-demo.test]
git clone https://github.com/dilip49/graphql-demo.git
cd graphql-demo
ruby -v
The ouput should start with something like ruby '2.7.2'
If not, install the right ruby version using rbenv (it could take a while):
rbenv install 2.7.2
bundle && yarn
rails db:create db:migrate db:seed
rails s