anchor.diff:      }
     }
   
  -  void _showErrorDialog(
  -      BuildContext context, String title, FirebaseAuthException e) {
  +  void _showErrorDialog(BuildContext context, String title, Exception e) {
       showDialog<void>(
         context: context,
         builder: (BuildContext context) {
  
positive.code: import 'package:flutter/material.dart';
  import 'package:firebase_auth/firebase_auth.dart' show FirebaseAuthException;
  
  import 'widgets.dart';
  
  
negative.code:             child: ListBody(
                children: <Widget>[
                  Text(
                    '${(e as dynamic).message}',
                    style: TextStyle(fontSize: 18),
                  ),
                ],
  