When editing the watch face, I can select a complication area in order to select which app the complication should show info for. In the list of apps, I can find my app, but there is no app icon in front of my app name. How come? Which icon is it using? I have defined graphics for all app icon resolutions. Is there something else I need to add?

I have an iOS app that includes a Watch app. So far, I have only had to implement the complications I needed on the Watch app, but with XCode 12 it seems I have to implement all complications all of a sudden. If I do not the Watch app crashes almost immidiately in the simulator. How come this changed? Can I somehow avoid implementing all types of complications?