rake db:migrate rake aborted! Gem::LoadError: You have already activated rake 12.0.0, but your Gemfile requires rake 12.2.1. Prepending `bundle exec` to your command may solve this. - Qiita

rake db:migrate rake aborted! Gem::LoadError: You have already activated rake 12.0.0, but your Gemfile requires rake 12.2.1. Prepending `bundle exec` to your command may solve this.likers

Takayuki Moto@cycle
フロントエンドエンジニアです。 Jamstackに興味があります。