在Flutter完全菜鸟.我试图解决这样的问题'URI的目标不存在'包：Flutter/材料. dart '.我观察到我没有解决一些软件包.所以我尝试flutter clean--> flutter pub get.这是我疯了，因为它不会让我安装软件包.确切的错误-

Resolving dependencies...
  intl 0.18.1 (0.19.0 available)
  material_color_utilities 0.5.0 (0.8.0 available)
Got dependencies!
2 packages have newer versions incompatible with dependency constraints.
Try `flutter pub outdated` for more information.

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已尝试flutter update-packages --force-upgrade，已尝试放置

dependency_overrides:
  intl: ^0.18.1 
  material_color_utilities: ^0.5.0

型
但是不管我怎么尝试，同样的问题。我的pubspec.yml是-->

name: rest_app
description: A new Flutter project.
version: 1.0.0+1
environment:
  sdk: '>=3.2.3 <4.0.0'

dependencies:
  flutter:
    sdk: flutter
  google_fonts: ^6.1.0
  provider: ^6.1.1
  firebase_auth: ^4.15.3
  local_auth: ^2.1.7
  cupertino_icons: ^1.0.2

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true

  assets:
    - assets/

型
请帮助如何解决这个问题。我正在尝试this github repo。