The following error message was displayed Why is this? Value of type 'List' has no member 'navigationTitle' struct TopList: View {   @ObservedObject var fetcher = ToplistFetcher()   var body: some View{     NavigationView{       List{         Section(header: Text("緊急連絡")){           ForEach(0..<fetcher.toplistEmergencylists.count, id: \.self){ index in             VStack(alignment: .leading){               NavigationLink(destination: SecondView(t: fetcher.toplistEmergencylists[index].title)){                 VStack(alignment: .leading){                   HStack{                     Image(systemName: "doc.text")                       .font(.subheadline)                     Text(fetcher.toplistEmergencylists[index].title)                   }                   HStack(){                     Image(systemName: "person.circle")                       .font(.subheadline)                     Text(fetcher.toplistEmergencylists[index].changer)                   }                   HStack{                     Image(systemName: "calendar")                       .font(.subheadline)                     Text(fetcher.toplistEmergencylists[index].postdate.toStringWithCurrentLocale())                   }                 }               }             }           }         }         Section(header: Text("必読")){           ForEach(0..<fetcher.toplistMustlists.count, id: \.self){ index in             VStack(alignment: .leading){               NavigationLink(destination: SecondView(t: fetcher.toplistMustlists[index].title)){                 VStack(alignment: .leading){                   HStack{                     Image(systemName: "doc.text")                       .font(.subheadline)                     Text(fetcher.toplistMustlists[index].title)                   }                   HStack(){                     Image(systemName: "person.circle")                       .font(.subheadline)                     Text(fetcher.toplistMustlists[index].changer)                   }                   HStack{                     Image(systemName: "calendar")                       .font(.subheadline)                     Text(fetcher.toplistMustlists[index].postdate.toStringWithCurrentLocale())                   }                 }               }             }           }         }         Section(header: Text("最近の投稿")){           ForEach(0..<fetcher.toplistRecentlists.count, id: \.self){ index in             VStack(alignment: .leading){               NavigationLink(destination: SecondView(t: fetcher.toplistRecentlists[index].title)){                 VStack(alignment: .leading){                   HStack{                     Image(systemName: "doc.text")                       .font(.subheadline)                     Text(fetcher.toplistRecentlists[index].title)                   }                   HStack(){                     Image(systemName: "person.circle")                       .font(.subheadline)                     Text(fetcher.toplistRecentlists[index].changer)                   }                   HStack{                     Image(systemName: "calendar")                       .font(.subheadline)                     Text(fetcher.toplistRecentlists[index].postdate.toStringWithCurrentLocale())                   }                 }               }             }           }         }       }       .navigationTitle("掲示板TOP")       .listStyle(GroupedListStyle())     }   } }