When I run my app, I got error as below, how and where can I find the reason for this error? please give some suggestion.
Code:
-[__NSDictionaryM urlEncodedString]: unrecognized selector sent to instance 0x9aa43d0
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryM urlEncodedString]: unrecognized selector sent to instance 0x9aa43d0'
*** First throw call stack: