ios – Mix conversion from mannequin to viewModel provides error “Sort of expression is ambiguous with out extra context when operating .eraseToAnyPublisher()

I’m attempting to determine why the final .eraseToAnyPublisher() is giving the aforementioned error, to me it appears all the categories are effectively specified, aren’t they?

static func searchUsers(question: String) -> AnyPublisher<[UserViewModel], By no means> {
            // put together URL
            let urlString = "(baseURL)/search/customers?q=(question)"
            guard let url = URL(string: urlString) else  {
                return Simply([]).eraseToAnyPublisher()
            }
            // get deal with of native knowledge process writer
            let writer = URLSession.shared.dataTaskPublisher(for: url)
                .handleEvents(
                    receiveSubscription: { _ in
                        activityIndicatorPublisher.ship(true)
                    }, receiveCompletion: { _ in
                        activityIndicatorPublisher.ship(false)
                    }, receiveCancel: {
                        activityIndicatorPublisher.ship(false)
                    })
                .tryMap { knowledge, response -> Knowledge in
                    guard let httpResponse = response as? HTTPURLResponse,
                          httpResponse.statusCode == 200 else {
                              throw NetworkError.httpError
                          }
                    print(String(knowledge: knowledge, encoding: .utf8) ?? "")
                    return knowledge
                }
                .decode(kind: SearchUserResponse.self, decoder: JSONDecoder())
                .map { $0.gadgets }
                .flatMap({ customers in
                    var userViewModels = [UserViewModel]()
                    customers.forEach { person in
                        userViewModels.append(contentsOf: UserViewModel(with: person))
                    }
                    return userViewModels
                })
                .catch { err -> Simply<[UserViewModel]> in
                    print(err)
                    return Simply([])
                }
                .eraseToAnyPublisher() // <-- HERE IS THE ERROR
            return writer
        }