SwiftUI Table View is Crashing

The cause of crash is probably

_Bug_Detected_In_Client_Of_UITableView_Invalid_Number_Of_Rows_In_Section

Confirmed by:

invalid number of rows in section 0. The number of rows contained in an existing section after the update (2) must be equal to the number of rows contained in that section before the update (2), plus or minus the number of rows inserted or deleted from that section (1 inserted, 0 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).'

Check if the number of rows in tableView and in dataSource are consistent. Problem problem comes when you add or remove an element in tableView and forget to update dataSource accordingly.

Code Block swift
            Form {
                Section(header: Text("Details")) {
                    if showMeasurementField {
                        HStack {
                            TextField("\(workoutType.rawValue)", text: $measurement)
                                .keyboardType(.decimalPad)
                            Text(workoutTypeUnit!.symbol)
                        }
                    }
                    Stepper("\(sets) set\(sets == 1 ? "" : "s")", value: $sets, in: 1...1000)
                    Stepper("\(reps) rep\(reps == 1 ? "" : "s")", value: $reps, in: 1...1000)
                    DurationInput(seconds: $duration)
                }
            }|

facing same issue 14.5.1. Is there any workaround to fix that ?

Still occurring on random occasions in iOS 14.6 in several separate views using code:

struct FilteredListView: View {
    @EnvironmentObject var numberState: NumberState

    @FetchRequest
    var numbers: FetchedResults<Purging>

    private var downloadCompletePublisher = NotificationCenter.default
        .publisher(for: .dataDownloadComplete)
        .map { notification in
            return notification.userInfo as! [DataSources.Source : Int]
        }
       .receive(on: RunLoop.main)

    var body: some View {    
        List {
            ForEach(Array(numbers.enumerated()), id: \.element.uuid) { index, number in
                NavigationLink(destination: NumberDetailView(number: number)) {
                    NumberRowView(number: number)
                }
            }
        }
        .add(SearchBar(searchText: $numberState.searchText, "Search for N-numbers"))
        .id(numberState.refreshID)      // <-- removing this seems to eliminate the issue 
        .onReceive(downloadCompletePublisher) { userInfo in
            checkForUpdatedNumbers(userInfo: userInfo)
        }
    }

    init(sorter: NumberSorter) {
        ...  code to execute fetch request into _numbers
    }
}

obviously, we don't have access to the UITableView data source methods, but I'd like to know how to peek into SwiftUI's execution.

I had this error when loading data to drive a TabView in .onAppear. I put the load in a DispatchQueue.main.async {} wrapper and the error went away. Looks like it could be happening when structure driving the TabView is being updated when not on the UI thread.