• First run this command:
  gem uninstall rails
  
  You should see a success message when it's done saying: "Successfully uninstalled rails-< version-number >"

• Second run this command:
  gem uninstall railties
  
  You will get a message saying: "If you remove this gem, these dependencies will not be met. Continue with Uninstall?" type "y" for all future messages. You should see a success message when it's done saying: "Successfully uninstalled railities-< version-number >"

• Make a check before installing rails to make sure it has been successfully uninstalled by typing in your terminal:
  rails -v
  and it should show you a message saying: "rails: command not found"

psst: if it doesn't show try restarting the terminal.

• Now go ahead an install rails version 5.2.3:
  gem install rails --version=5.2.3

command: rails -v
message: Rails 5.2.3

psst: if it doesn't show try restarting the terminal.

• Let's get rid of the database we've created so far with rails 6 using these steps:
  
  • in your terminal: psql
  • once you're in psql type: DROP DATABASE muse_development; and then DROP DATABASE muse_test; Don't forget the semicolons

• Remove the old muse file made with rails 6.0
  
  • in your terminal go to the folder containing the muse file, run rm -rf muse
  • recreate the rails file in terminal, run rails new muse -d postgresql
  • create the db, cd into the muse folder, run rails db:create,then run rails db:migrate
  • test the app, run rails s
  • create the database, run rails g model Artist name hometown img albums:integer
  • migrate the database, run rails db:migrate