SwiftUI: I keep getting this error: "Thread 1: "-[AccountBackEnd accountCompanyName]: unrecognized selector sent to instance 0x6000025aac40""

Hi Everyone,

I'm coming to you hat-in-hand again, as I'm really struggling with a point of my app that keeps crashing when I go to click on a cell in my list. Namely I get this error: Thread 1: "-[AccountBackEnd accountCompanyName]: unrecognized selector sent to instance 0x6000025aac40.". This appears right on the line of @main in the file that renders the app's output. To make matters worse, this is in SwiftUI and there doesn't seem to be a lot of documentation on this error online.

I'm not 100% sure, but I think it's got something to do with a syste for navigation that I downloaded, I was using which was meant to make navigation simpler. I don't think that's the case here. I've begun the process of going away from that system of buttons to use the more conventional NavigationView and NavigationLink.

I've managed to deal with a few errors already here, but this one seems to be kicking my **** pretty badly. I'm at a loss. I'll put my code below for your review.

As always, any help here is greatly, greatly appreciated.

Database view, this contains the app's list

struct DatabaseViewMain: View {
    
    //Fetch request for pulling from persistent store.
    @Environment(\.managedObjectContext) private var viewContext
    @FetchRequest(
        sortDescriptors: [NSSortDescriptor(keyPath: \AccountBackEnd.accountCompanyName, ascending: true)],
        animation: .default)
    private var accounts: FetchedResults<AccountBackEnd>
    
    //Calls to Class for published objects
    @EnvironmentObject var publishedClasses: PublishedClasses
    
    //Takes object from @StateObject, presents as var
    @ObservedObject var accountBackEnd: AccountBackEnd = AccountBackEnd()
    
    var body: some View {
        
        VStack {
            HStack {
                Spacer()
                
                NavigationLink {
                    AddAccountView()
                } label: {
                    SubHeaderViewIcon(subheaderIcon: "plus.square", subheaderIconColor: Color("EditButtonBlue"))
                }
                .padding()

            }
            
            List {
                ForEach(accounts, id: \.self) {account in
                    
                    
                    
                    NavigationLink {
                        AccountDetailMain(accountBackEnd: accountBackEnd)
                    } label: {
                        Text(account.accountCompanyName ?? "")
                    }
                }
                .onDelete(perform: deleteAccounts)
                .environmentObject(publishedClasses)
            }
            .listStyle(PlainListStyle())
        }
        .navigationBarHidden(true)
        .environmentObject(publishedClasses)
    }
    
    //Deleting Account
    private func deleteAccounts(offsets: IndexSet) {
        withAnimation {
            offsets.map { accounts[$0] }.forEach(viewContext.delete)
            do {
                try viewContext.save()
            } catch {
                print("Shit. Something happened. Error \(error.localizedDescription)")
                let nsError = error as NSError
                fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
            }
        }
    }
}

AccountDetailMain, this presents the user with their Account's info. I believe this is the part that is actually crashing the app?

struct AccountDetailMain: View {
    
    //Managed Object Context Call
    @Environment(\.managedObjectContext) private var viewContext
    @FetchRequest(
        sortDescriptors: [NSSortDescriptor(keyPath: \AccountBackEnd.accountID, ascending: true)],
        animation: .default)
    private var accounts: FetchedResults<AccountBackEnd>
    
    //Calls from @Published
    @EnvironmentObject var publishedClasses: PublishedClasses
    
    //Takes object from @StateObject, presents as var
    @ObservedObject var accountBackEnd: AccountBackEnd
    

    var body: some View {
        
        ScrollView {
            
            VStack {
                MainHeaderViewTop(mainTextField: accountBackEnd.accountCompanyName ?? "", iconField: "building")
            }
            .environmentObject(publishedClasses)
            
            Spacer()
                .frame(height: 5)
            
            HStack {
                
                NavigationLink {
                    EditAccountView()
                } label: {
                    MainHeaderViewBottomLeft()
                }

                Spacer()
                
                NavigationLink {
                    AddAccountView()
                } label: {
                    SubHeaderViewIcon(subheaderIcon: "plus.square", subheaderIconColor: Color("EditButtonBlue"))
                }

            }
            
            ViewSpacer()
            
            Group {
                SalesRecords()
                ViewSpacer()
                
                LatestThreeQuotes()
                ViewSpacer()
                
                LatestNote()
                ViewSpacer()
            }
            
            Group {
                AccountsContactsView()
                ViewSpacer()
                
                BranchContactInfoView()
                ViewSpacer()
                
                AccountAddressView()
                ViewSpacer()
                
                RepDetailsView()
                ViewSpacer()
            }
            
            
            Group {
                
                NavigationLink {
                    EditAccountView()
                } label: {
                    LargeEditButtonGreen(editButtonLabel: "Edit Account")
                }

                ViewSpacer()
                
            }
            .environmentObject(publishedClasses)
        }
        .navigationBarHidden(true)
        .environmentObject(publishedClasses)
    }
   
}