title: The sandbox is not in sync with the Podfile.lock-ios
body: <p>I have got the following errors after trying multiple answers from the google. </p>
  
  <pre><code>PhaseScriptExecution Check\ Pods\ Manifest.lock /Users/apple/Library/Developer/Xcode/DerivedData/Build/Intermediates/FoodSpot.build/Debug-
      iphonesimulator/FoodSpotTests.build/Script-36819C3C1B6A30F50091382D.sh
          cd "/Users/apple/Downloads/FoodSpot 2"
          /bin/sh -c /Users/apple/Library/Developer/Xcode/DerivedData/Build/Intermediates/FoodSpot.build/Debug-iphonesimulator/FoodSpotTests.build/Script-36819C3C1B6A30F50091382D.sh
  
      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.
  </code></pre>
  
  <p>I have updated and installed many times, but they are of no use.</p>