Hi, so im having trouble with this part of the challenge. I got the first one (extract the rectangle to its own swiftui view) but this one im having trouble with the preview as it asks for a crew value.

After some tests right now i have this code on the preview

struct AstronautListView_Previews: PreviewProvider {
    struct CrewMember {
        let role: String
        let astronaut: Astronaut
    }

    static let missions: [Mission] = Bundle.main.decode("missions.json")
    let astronauts: [String:Astronaut] = Bundle.main.decode("astronauts.json")
    let crew = [CrewMember(role: "test", astronaut: Astronaut(id: "", name: "", description: ""))]
    static var previews: some View {

        AstronautListView(crew: crew)
    }
}

I also tried to do a real crew element selecting a mission and everything, but I always get the same errors:

Cannot convert value of type '[AstronautListView_Previews.CrewMember]' to expected argument type '[AstronautListView.CrewMember]' Instance member 'crew' cannot be used on type 'AstronautListView_Previews'

I dont know how to continue this part, I followed the tutorial part where he makes the crew array and try to implement it 1:1 in the preview code with no luck.

Update:

So I got it working with a placeholder crew array, when im trying to make a real example one like in the other views I got another error:

With this code

struct AstronautListView_Previews: PreviewProvider {

    static let missions: [Mission] = Bundle.main.decode("missions.json")
    let astronauts: [String:Astronaut] = Bundle.main.decode("astronauts.json")

    static var previews: some View {
        var crew2 = missions[0].crew.map {member in
            if let astronaut = astronauts[member.name]{
                return CrewMember(role: member.role, astronaut: astronaut)
            } else {
                fatalError("Missin \(member.name)")
            }
        }
        let crew = [CrewMember(role: "test", astronaut: Astronaut(id: "", name: "", description: ""))]
        AstronautListView(crew: crew)
    }
}

In the line var crew2 = missions[0].crew.map {member in I get ther error "Generic parameter 'T' could not be inferred" pointing to the word "crew"