Hi there!
"MoltenVK.xcframework" folder is missing when building for iOS (appears red in Xcode's file structure).
It's there when original export templates are used (downloaded via editor).
If you unzip the export templates provided by Spine, you will notice that "ios.zip" doesn't have "MoltenVK.xcframework" folder inside 
Workaround:
I've copied the missing folder to the export destination next to the ".xcodeproj" and the build went through 
Version: 4.1.1 (no C# support) - could not edit the post twice.
Sigh, the build system keeps on giving. Sorry for that! I've opened an issue here and will try to resolve this asap.
Where are you getting the MoltenVK.xcframework folder? I don't see it in any of the Godot export templates.
My bad, I never had the default export templates installed, but I see the file is in there.
This has now been fixed. The MoltenVK.xcframework is now shipped inside the iOS export template.
