chromedriverをインストール
> brew install chromedriver Error: No available formula with the name "chromedriver" It was migrated from homebrew/core to homebrew/cask. You can access it again by running: brew tap homebrew/cask And then you can install it by running: brew cask install chromedriver > brew cask install chromedriver Linking Binary 'chromedriver' to '/usr/local/bin/chromedriver'.