Issue with step 3

[yungpackage]

In trying to replace the SceneDelegate contents I run into an issue.

When I build the app, it succeeds, but I then get the following issue error which doesn't allow the app to load.

Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value

For the line window!.rootViewController = navigationController

Any idea around the issue?

[zachwaugh]

Did you setup your app using storyboard? It sounds like it's crashing since it can't find the window, which the storyboard will provide the window automatically. A storyboard setup isn't required, just what the quick start guide assumes for simplicity.

[yungpackage]

That did the trick thanks so much @zachwaugh

[julianrubisch]

I hit this too... added a documentation PR here: #6