Failed to produce diagnostic for expression; please submit a bug report

i did " // customslidebar.swift // chatbot // // Created by AndrewLee on 2022/05/04. //

import SwiftUI

enum Tab: String, CaseIterable {     case house     case message     case person     case gearshape }

struct customslidebar: View {   @Binding var selectedTab: Tab   private var fillimage: String {     selectedTab.rawValue + ".fill"   }       var body: some View {     VStack {       HStack {         ForEach(Tab.allCases, id: .rawValue) { tab in           Spacer()           image(systemName: selectedTab == tab ? fillimage : tab.rawValue)           Spacer()                                 }       }       .frame(width: nil, height: 60)       .background(.thinMaterial)       .cornerRadius(10)       .padding()             }   } }

struct customslidebar_Previews: PreviewProvider {   static var previews: some View {     customslidebar(selectedTab: .constant(.house))   } } this but it says Failed to produce diagnostic for expression; please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project