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macOSをバージョンアップしたらrails s出来なくなった

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#問題

① macOS Catalina のバージョンを10.15.4にアップデートする

② 現在制作途中のアプリケーションのディレクトリにてrails sする

③ 以下のようなエラーが出る

Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)

#解決

上記のサイトにて、最新版のNode.jsをインストールするか

ターミナルで、homebrewを用いてインストールを行う

% brew install nodejs     

すると、無事rails sでローカルサーバーを起動できた。

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