bundle install

Cloud9 MySQLの設定でのトラブルと解決策

190708 16:54:17 url:https://qiita.com/emahiro/items/1a63d676be9fc4975759 $ bundle install →error An error occurred while installing mysql2 (0.5.2), and Bundler cannot continue. Make sure that `gem install mysql2 -v '0.5.2' --source 'https:…