If you see this error in Xcode, you will see a solution/project on the left hand side. Simply navigate over to that storyboard and open it up and it will sync up.
Xamarin.Forms iOS storyboard not working, XCode is terrible .... bounty offered !
Start with a simple Xamarin.Forms Shell app.
I try to edit the storyboard with the XCode interface builder
I get this error:
I am trying to simply replace the stock placeholder images with my own ....
https://learn.microsoft.com/en-us/xamarin/ios/app-fundamentals/images-icons/launch-screens?tabs=macos
But they deprecated the VS storyboard editor and never provided documentation on how to do it in XCode
I reported that and it was promptly closed as a Visual Studio issue .. they never addressed the lack of documentation.
https://github.com/MicrosoftDocs/xamarin-docs/issues/3300#issuecomment-832089687
I don't want to simply rename my graphic files and swap them ... what if I want to add text or something later ?
I use Xamarin because I hate XCode .... Microsoft is on a MAUI deathmarch and too busy to address these issues or actually have a solution BEFORE they deprecate a feature.
I will Venmo or PayPal someone who is will to create an easy to follow document on how to do this even though Microsoft deprecated features with no actual working alternative.