cocoapods error: The sandbox is

Github下载的源码报错

diff: /../Podfile.lock: No such file or directory

diff: /Manifest.lock: No such file or directory

error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.

解决办法：

删除原来的workspace文件，然后只需要打开终端到当前目录下，重新pod install就可以了～