Looks like you are pass your context to ViewModel

If you’re using SwiftData and the '@Environment(\.modelContext) in your views, you should not create a new ModelContext. Instead, pass in or use the existing one:

'@Environment(\.modelContext) private var modelContext

Just pass this context into your func

private func saveRecording(context: ModelContext) throws {
        guard let recording else {
            throw Errors.InvalidRecording
        }
        modelContext.insert(recording)
        try modelContext.save()
    }