[WM] - Error in iOS app

Hello,

I have converted a Android app to iOS. WM generates the necessary code and projects and this project compiles properly in XCode.

But when we run the app in an iPhone having iOS 9.3.0 I am getting this error.
[attachment 1946 IMG_0542.PNG]

The code works perfectly in case of Android. So what is this error for?

How to solve this error?

TIA

Yogi Yang