I installed Xcode 26.0 beta and downloaded the generative models sample from here: https://developer.apple.com/documentation/foundationmodels/adding-intelligent-app-features-with-generative-models But when I run it in the iOS 26.0 simulator, I get the error shown here. What's going wrong?

I installed Xcode 26.0 beta and downloaded the generative models sample from here: https://developer.apple.com/documentation/foundationmodels/adding-intelligent-app-features-with-generative-models But when I run it in the iOS 26.0 simulator on my Mac (Sequoia 15.5), I get the error shown here. What's going wrong?

I'm getting this error in the debugger ("Presentations are not currently supported in Volumetric contexts.") in VisionOS when I try to present an alert in a Volume. What's the correct way to present a modal alert in a volumetric window group? I'm using Xcode 15.3 Beta 3 with Apple Vision Pro (1.1) simulator. This is also preventing me from using the RevenueCat paywall UI since it also returns this error. var body: some Scene { WindowGroup { SheilaAppView() .presentPaywallIfNeeded( requiredEntitlementIdentifier: "access", purchaseCompleted: { customerInfo in print("Purchase completed: \(customerInfo.entitlements)") }, restoreCompleted: { customerInfo in // Paywall will be dismissed automatically if "pro" is now active. print("Purchases restored: \(customerInfo.entitlements)") } ) }.windowStyle(.volumetric) }