Error with Facebook SDK once moved to XCODE

Hello, any help would be much appreciated!

The FB login works fine on android. Without the facebook SDK it runs fine on IOS. When I put them together I get the error...

Semantic Issue: Cannot find the protocol declaration for UIApplicationOpenUIRLOptionssKey

Here is a screenshot from Xcode... I searched for hours and cannot find this... if it's out there then my apologies....

Thank you very much!
Chris