I kept receiving this error while attempting to link devices in simulator using Multipeer Connectivity, MCSession, MCNearbyServiceBrowser, and MCNearbyServiceAdvertiser. I fixed it by setting the delegates for each of those three variables to self immediately after changing them to their final state instead of all in viewDidLoad(). Hope this helps someone!
Pinkster
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution