Unable to integrate with iOS

Hello, Could you please help me out how to use graphhopper in ios actually i have seen graphhopper-ios sample on github but when i tried to run that sample code and tried to drop a pin on map application get crashed. So that i’m unable to integrate graphhopper in my own application. I’m using xcode version 8.2.1.

Please help me ASAP.

Thanks Madhura Chandorkar