Not able to compile:Incompatible block pointer types assigning to ....

[KerwinMa]

/PeerObjectiveC/PeerObjectiveC/ViewController.m:122:16: Incompatible block pointer types assigning to 'void (^)(RTCSessionDescription *__strong, NSDictionary *__strong)' from 'void (^)(RTCSessionDescription *__strong)'

If fixed this given another parameter (not used?) to it, can fix the issue. Compile again and got another error:/PeerObjectiveC/PeerObjectiveC/ViewController.m:221:10: No visible @interface for 'Peer' declares the selector 'callWithId:'

[shyingboy]

@KerwinMa I met the two error too. How do you solve them?