title: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation
body: <p>i tried to install pod on ios project but getting this errors 
  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 .
  please suggest me something.</p>