Hi! I'm learning Swift from Apples Tutorials. Right now I'm doing the Scrumdinger tutorial and I'm following the steps to create the app. But right now I get the following errors when I'm creating the CardView. Static property 'sampleData' is not a member type of 'DailyScrum' Array types are now written with the brackets around the element type This is my code: import Foundation struct DailyScrum {     var title: String     var attendees: [String]     var lengthInMinutes: Int     var theme: Theme } extension DailyScrum {     static let sampleData: [DailyScrum] = [         DailyScrum(title: "Design", attendees: ["Chris, Hans"], lengthInMinutes: 10, theme: .yellow),         DailyScrum(title: "Frontend", attendees: ["Daniel, Maria"], lengthInMinutes: 10, theme: .yellow),         DailyScrum(title: "Backend", attendees: ["Fred, Helen"], lengthInMinutes: 10, theme: .yellow)     ] } import SwiftUI struct CardView: View {     let scrum: DailyScrum     var body: some View {         Text("Hello, World!")     } } struct CardView_Previews: PreviewProvider {     static var scrum: DailyScrum.sampleData[0]     static var previews: some View {         CardView(scrum: scrum)     } } Has the language changed since the tutorial was written? Any advice on how I shall proceed? Best regards, Fredrik