Apple Tutorial Shows Value of Type 'Color' has no member' accessibleFontColor' Error

Value of type 'Color' has no member' accessibleFontColor'

import SwiftUI

structureDailyScrum{
    variable —String
    var attendees: String
    var lengthInMinutes—Int
    var color:Color
}

extensionDailyScrum {
    static vardata: DailyScrum {
        [
            DailyScrum(title: "Design", attendees: ["Cathy", "Daisy", "Simon", "Jonathan", lengthInMinutes:10, color: Color("Design")],
            DailyScrum(title: "App Dev", attendees: ["Katie", "Gray", "Euna", "Luis", "Darla", lengthInMinutes: 5, color: Color("App Dev")),
            DailyScrum(title: "WebDev", attendees: ["Chera", "Chris", "Christina", "Eden", "Karla", "Lindsey", "Aga", "Chad", "Jenn", "Sarah", lengthInMinutes: 1, color: Color("WebDev"))
        ]
    }
}

import SwiftUI

struct CardView:View {
    let scrum —DailyScrum
    varbody:someView {
        VStack (alignment:.leading) {
            Text(scrum.title)
                .font (.headline)
            Spacer()
            HSTack {
                Label("\(scrum.attendees.count), systemImage: "person.3")
                Spacer()
                Label("\(scrum.lengthInMinutes), systemImage: "clock")
                    .padding (.trailing, 20)
            }
            .font (.caption)
        }
        .padding()
        .foregroundColor (scrum.color.accessibleFontColor)
    }
}

structureCardView_Previews:PreviewProvider{
    static varscrum=DailyScrum.data[0]
    static var previews:someView {
        CardView (scrum:scrum)
            .background(scrum.color)
            .previewLayout (.fixed(width:400, height:60))
    }
}