Finding a bug using Xcode - attempt to insert nil value

Question

I am getting a random bug in my app, which is causing it to crash. The problem I am facing is XCode doesn\'t tell me where the crash is happening only the below information. Can

Answer 1

your problem is that you are using setObject: forKey Method to NSDictionary just make it NSMutableDictionary then try this method you can't assign value for NSDictionary like you are trying it's only for NSMutableDictionary.

i hope you will get my point what i am try to say.