Oh thanks for pointing me there! Seems there's a workaround. I'll try that first, then reply again here for the result.

Hey, this actually worked for me. Big thanks! Had to replace #Preview with the good old struct ContentView_Previews: PreviewProvider.

I was on iOS 17 beta 6. But for some reason, when I checked Software Update on Settings, it was letting me install iOS 17 beta 5. Thought that was weird. Maybe that was just a glitch or bug. Cause when I checked Software Update again after installing what I thought was iOS 17 beta 5, it tells me I'm up to date. So I guess I'm on beta 7 now. Real weird.