on viewDidLoad my app crashes and shows a thread

Hello Guys!! im new to ios and as wel as in Charts plz help me i have did all things mention in demo same but when i start my project it crashes on "myChart.delegate = self" even "self.myChart.delegate = self" so im not getting the point where im making mistake. help will be appreciated.

Solved it was simulator bug just uninstall the app and clean project and run.

The report does not name a source file, failing test, or reproducible stack trace. It states that the crash was caused by a simulator issue and was resolved by uninstalling the app, cleaning the project, and rerunning it, so there is no implementation work or verification target described.

Written by the indexing model from the issue text.