90 trubleshoot
macOSアップデート後の『xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools)...』の対処法
https://qiita.com/nishina555/items/e23d73067a5cac182a63
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
以下を実行(xcodeをインストール)
xcode-select --install