问题
xcrun: error: active developer path ("/Applications/Xcode.app/Contents/Developer") does not exist
Use sudo xcode-select --switch path/to/Xcode.app to specify the Xcode that you wish to use for command line developer tools, or use xcode-select --install to install the standalone command line developer tools.
See man xcode-select for more details.
方法
可以通过xcode-select命令来重置系统默认的CommandLineTools路径，如下
解决方案：
xcode-select --switch /Library/Developer/CommandLineTools
xcode-select -p