При излучении SIL для 'successFbLoginResponse (response :)'

Question

с использованием xcode 10.1 и swift версии 4.2 я делаю сборку, но я получил эту ошибку быстрого компилятора (команда завершилась неудачно из-за сигнала: ошибка сегментации: 11) и "Во время передачи SIL для 'successFbLoginResponse (response :)' в ... . "вот код с ошибкой:

func successFbLoginResponse(response: DataResponse<Any>) {
        print(response)
        if let result = response.result.value {
            let JSON = result as! NSDictionary
            let ok = JSON[kok] as! NSNumber
            if ok == 1 {
                self.currentUploadingCount += 1
                self.multipleFileProgressView.progress = Float(self.currentUploadingCount)/Float(self.totalItems)
                self.multipleFileProgressLabel.text = "\(self.currentUploadingCount) \(kof) \(self.totalItems) \(kfiles_have_been_uploaded)"
                let progressDictionary: [String: Int] = [kuploadedCount: self.currentUploadingCount, ktotalCount: self.totalItems]
                // post a notification
                NotificationCenter.default.post(name: NSNotification.Name(kUploadProgress), object: nil, userInfo: progressDictionary)
                if self.currentUploadingCount < self.totalItems {
                    self.uploadItem(item: (self.assets?[self.currentUploadingCount])!)
                } else {
                    self.assets?.removeAll()
                    self.singleFileProgressView.progress = 0
                    self.singleFileProgressLabel.text = kZeroPercent
                    self.multipleFileProgressView.progress = 0
                    self.uploadComplete = true
                    delegate?.recallApi()
                    NotificationCenter.default.post(name: NSNotification.Name(kcompletion), object: nil, userInfo: nil)
                    Utility.showAlertWithSingleOption(controller: self, title: "", message: kUpload_is_done, preferredStyle: .alert, buttonText: kReturn, buttonHandler: { (action: UIAlertAction!) in
                        // _ = self.navigationController?.popViewController(animated: true)
                        if self.isPublicFile {
                            self.tabBarController?.selectedIndex = 0
                        } else {
                            self.tabBarController?.selectedIndex = 1
                        }

                    })
                }
            } else {
               self.uploadItem(item: (self.assets?[self.currentUploadingCount])!)
            }
        } else {
            self.singleFileProgressView.progress = 0
            networkFailureAction()
        }
    }