title: Could not build module 'FBSDKCoreKit' For FacebookSDK 4
body: <p>I am having issue while updating Facebook SDK 3 to 4</p>
  
  <p>when I add the framework it was added successfully. but when i add header file it's having the error that <strong>" Could not build module 'FBSDKCoreKit' "</strong>. Don't know the reason.</p>
  
  <p><img src="https://i.stack.imgur.com/Wo2sV.png" alt="Error Could not build module &#39;FBSDKCoreKit&#39; "></p>