Landmarks Tutorial. Preview doesn't work

Hi everyone,

I'm trying to follow the Landmarks project tutorial and got stuck in the second part, in the second section (Create the Row View), step 6 where it says "Modify the text view to use the landmark property’s name." This must be done in the LandmarkRow.swift file.

https://developer.apple.com/tutorials/swiftui/building-lists-and-navigation

The tutorial shows that after doing this, the preview will display the name of the landmark (Turtle Rock) instead of the usual "Hello world" greeting. But my replacement is not happening. Moreover, from this point on, the preview stops working. There are no error messages in the code, except for the message that the preview could not be performed.

I checked and rewrote the code several times, replaced the data source files, but nothing helped.

At the same time, the preview works well in other view files.

I can't figure out what's wrong with my code? Any ideas as to what the reason will be is appreciated.

Below is the code of two files, the LandmarkRow.swift, where view does not work, the second is ModelData.swift and it is related to the previous one.

LandmarkRow.swift

Code Block 
import SwiftUI
struct LandmarkRow: View {
    var landmark: Landmark
    var body: some View {
        HStack {
            landmark.image
                .resizable()
                .frame(width: 50, height: 50)
            Text(landmark.name)
            Spacer()
        }
    }
}
struct LandmarkRow_Previews: PreviewProvider {
    static var previews: some View {
        LandmarkRow(landmark: landmarks[0])
    }
}

ModelData.swift

Code Block 
import Foundation
var landmarks: [Landmark] = load("landmarkData.json")
func load<T: Decodable>(_ filename: String) -> T {
    let data: Data
    guard let file = Bundle.main.url(forResource: filename, withExtension: nil)
    else {
        fatalError("Couldn't find \(filename) in main bundle")
    }
    do {
        data = try Data(contentsOf: file)
    } catch {
        fatalError("Couldn't load \(filename) from main bundle:\n\(error)")
    }
    do {
        let decoder = JSONDecoder()
        return try decoder.decode(T.self, from: data)
    } catch {
        fatalError("Couldn't parse \(filename) as \(T.self):\n\(error)")
    }
}