明明已经安装 Xcode 了,且 appnium-doctor 检测结果提示 Xcode is installed
$ macaca doctor
https://macacajs.github.io/zh/guide/environment-setup.html#%E5%91%BD%E4%BB%A4%E8%A1%8C%E5%B7%A5%E5%85%B7
xcode10.2.1 貌似不支持