错误：在提供程序包中找不到类型“ SingleChildCloneableWidget”

我更新了提供商。现在不起作用

lib / di / global_providers.dart：13：6：错误：找不到类型'SingleChildCloneableWidget'。列出globalProviders = [lib / di / global_providers.dart：18：6：错误：找不到类型'SingleChildCloneableWidget'的globalProviders = [^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 。列出IndependentServices = [lib / di / global_providers.dart：23：6：错误：找不到类型'SingleChildCloneableWidget'的独立列印服务= [^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 。列表dependentServices = [lib / main.dart：18：16：错误：参数类型'列表'可以'的列表依赖服务= [^^^^^^^^^^^^^^^^^^^^^^^^^^^^^分配给参数类型“列表”。-“列表”来自“ dart：core”。-'SingleChildWidget'来自'package：nested / nested.dart'（'../../flutter/.pub-cache/hosted/pub.dartlang.org/nested-0.0.4/lib/nested.dart' ）。provider：globalProviders，^ lib / di / global_providers.dart：13：6：错误：“ SingleChildCloneableWidget'不是类型。列出globalProviders = [lib / di / global_providers.dart：18：6：错误：“ SingleChildCloneableWidget”不是一种。列出IndependentServices = [lib / di / global_providers.dart：23：6：错误：“ SingleChildCloneableWidget”不是“ [^^^^^^^^^^^^^^^^^^^^^^^^^^^^^一种。列出dependentServices = [

码

List<SingleChildCloneableWidget> globalProviders = [
  ...independentServices,
  ...dependentServices,
];

List<SingleChildCloneableWidget> independentServices = [
  Provider.value(value: YelloChatDb()),
  Provider.value(value: YelloChatClient()),
];

List<SingleChildCloneableWidget> dependentServices = [
  ProxyProvider<YelloChatDb, CategoryDao>(
      update: (context, yelloChatDb, categoryDao) => CategoryDao(yelloChatDb)),

  ProxyProvider<YelloChatDb, SubCategoryDao>(
      update: (context, yelloChatDb,subCategoryDao) => SubCategoryDao(yelloChatDb)),

  ProxyProvider<YelloChatDb, UserDao>(
    update: (context, yelloChatDb, userdAO) => UserDao(yelloChatDb),
  ),

  ProxyProvider<YelloChatDb, EnquiriesDao>(
    update: (context, yelloChatDb, enquiriesDao) => EnquiriesDao(yelloChatDb),
  ),

  ProxyProvider<YelloChatClient, CategoryService>(
      update: (context, yelloChatClient, categoryService) =>
          CategoryService.create(yelloChatClient.chopperClient),
      dispose: (context, categoryService) => categoryService.client.dispose()),


  ProxyProvider2<CategoryDao, CategoryService, CategoriesRepository>(
      update: (context, categoryDao, categoryService, categoryRepository) =>
          CategoriesRepository(categoryDao: categoryDao, categoryService: categoryService)),

  ProxyProvider2<UserDao, CategoryService, UserRepository>(
      update: (context, userDao, categoryService, categoryRepository)=>
          UserRepository(userDao: userDao, categoryService: categoryService)
  ),

  ProxyProvider2<SubCategoryDao, CategoryService, SubCategoriesRepository>(
      update: (context, subCategoryDao, categoryService, subCategoryRepository) =>
          SubCategoriesRepository(categoryDao: subCategoryDao, categoryService: categoryService)),

  ProxyProvider2<EnquiriesDao, CategoryService, EnquiriesRepository>(
      update: (context, enquiriesDao, categoryService, enquiriesRepository) =>
          EnquiriesRepository(enquriesDao: enquiriesDao, categoryService: categoryService))
];