每次我注册时，获取“文档引用必须具有偶数个段，但用户具有1个段”，并且由于Sigabrt错误而导致应用程序崩溃

Question

我的应用程序运行良好，然后当我决定注销并尝试创建新帐户时，该应用程序因出现sigabrt错误而崩溃，并显示以下消息：“文档引用中的段数必须为偶数，但用户的段数为1”控制台。我相信这可能是我的Firebase数据库或Firebase身份验证出现问题的原因，但是我在网上查看并没有找到解决此问题的任何方法。我正在使用Firebase云存储。

我尝试删除所有将文档添加到数据库的调用，但始终收到此错误，这使我相信这是Authentication进程的错误，但是，用户仍然在firebase的Authentication部分中注册。

Auth.auth().createUser(withEmail: email.text!, password: password.text!){ (user, error) in
                    if error == nil {
                        self.accessCodeExists(){ (accessCode) in
                            //Adds the access Code to the the document and sets it data
//                           self.db.collection("Access Codes").document(accessCode).setData([self.email.text!: ["Admin", self.fullNameField.text!]])
//                           //add the user to the users
//                           self.db.collection("users").document(self.email.text!).setData(["Full Name": self.fullNameField.text!, accessCode: "access code"])
                            //let the user know that their stuff has been completed and give them their accessCode
                            let alertController = UIAlertController(title: "Your access code is " + accessCode, message: "Give those access codes to your employees or whoever you want to add to the server so they can join your server", preferredStyle: .alert)
                            let defaultAction = UIAlertAction(title: "Ok", style: .cancel
                                , handler: nil)
                            alertController.addAction(defaultAction)
                            //perform the segue to the home screen
                            self.performSegue(withIdentifier: "signupToHome", sender: self)
                            self.present(alertController, animated: true, completion: nil)
                        }
                    } else{
                        let alertController = UIAlertController(title: "Error", message: error?.localizedDescription, preferredStyle: .alert)
                        let defaultAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)

                        alertController.addAction(defaultAction)
                        self.present(alertController, animated: true, completion: nil)
                    }
                }

这是我收到的确切错误消息，“由于未捕获的异常'FIRInvalidArgumentException'，正在终止应用程序，原因：'无效的文档引用。文档引用必须具有偶数个段，但用户具有1''