Flutter使用easy_localization无法加载en.json资源的问题

我已在pubspec.yaml中正确声明资源，应用可正常运行，但模拟器提示Unable to load assets: "assets/translation/en.json"，提示资源不存在或数据为空。然而打开en.json文件，能看到其中包含内容。我已附上pubspec.yaml配置截图、en.json文件截图及模拟器报错截图，以下是使用easy_localization包的main.dart和app.dart代码，寻求问题解决方法：

main.dart代码 #

import 'dart:io';

import 'package:easy_localization/easy_localization.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:hive/hive.dart';
import 'package:kimathilegal_app/app.dart';
import 'package:path_provider/path_provider.dart';

import 'models/constants.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await EasyLocalization.ensureInitialized();
  await Firebase.initializeApp();
  Directory directory = await getApplicationDocumentsDirectory();
  Hive.init(directory.path);
  await Hive.openBox(Constants.bookmarkTag);
  await Hive.openBox(Constants.recentSearchTag);
  await Hive.openBox(Constants.notificationTag);
  SystemChrome.setSystemUIOverlayStyle(const SystemUiOverlayStyle(
      statusBarColor: Colors.transparent,
      statusBarIconBrightness: Brightness.dark));

  runApp(
    EasyLocalization(
      supportedLocales: const [Locale('en'), Locale('ar'), Locale('es')],
      path: 'assets/translation',
      fallbackLocale: const Locale('en'),

      //Default language
      startLocale: const Locale('en'),
      useOnlyLangCode: true,
      child: const MyApp(),
    )
  );
}

app.dart代码 #

import 'package:firebase_analytics/firebase_analytics.dart';
import 'package:flutter/material.dart';
import 'package:kimathilegal_app/pages/splash_page.dart';
import 'package:provider/provider.dart';
import 'blocs/ads_bloc.dart';
import 'blocs/category_bloc.dart';
import 'blocs/category_tab1_bloc.dart';
import 'blocs/category_tab2_bloc.dart';
import 'blocs/category_tab3_bloc.dart';
import 'blocs/category_tab4_bloc.dart';
import 'blocs/featured_bloc.dart';
import 'blocs/latest_articles_bloc.dart';
// import 'blocs/notification_bloc.dart';
import 'blocs/popular_articles_bloc.dart';
import 'blocs/settings_bloc.dart';
import 'blocs/tab_index_bloc.dart';
import 'blocs/theme_bloc.dart';
import 'blocs/user_bloc.dart';
import 'package:easy_localization/easy_localization.dart';
import 'models/theme.dart';


final FirebaseAnalytics firebaseAnalytics = FirebaseAnalytics.instance;
final FirebaseAnalyticsObserver firebaseObserver =  FirebaseAnalyticsObserver(analytics: firebaseAnalytics);

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return ChangeNotifierProvider<ThemeBloc>(
      create: (_) => ThemeBloc(),
      child: Consumer<ThemeBloc>(
        builder: (_, mode, child) {
          return MultiProvider(
              providers: [
                ChangeNotifierProvider<SettingsBloc>(create: (context) => SettingsBloc()),
                ChangeNotifierProvider<CategoryBloc>(create: (context) => CategoryBloc()),
                ChangeNotifierProvider<FeaturedBloc>(create: (context) => FeaturedBloc()),
                ChangeNotifierProvider<LatestArticlesBloc>(create: (context) => LatestArticlesBloc()),
                ChangeNotifierProvider<UserBloc>(create: (context) => UserBloc()),
                // ChangeNotifierProvider<NotificationBloc>(create: (context) => NotificationBloc()),
                ChangeNotifierProvider<PopularArticlesBloc>(create: (context) => PopularArticlesBloc()),
                ChangeNotifierProvider<AdsBloc>(create: (context) => AdsBloc()),
                ChangeNotifierProvider<TabIndexBloc>(create: (context) => TabIndexBloc()),
                ChangeNotifierProvider<CategoryTab1Bloc>(create: (context) => CategoryTab1Bloc()),
                ChangeNotifierProvider<CategoryTab2Bloc>(create: (context) => CategoryTab2Bloc()),
                ChangeNotifierProvider<CategoryTab3Bloc>(create: (context) => CategoryTab3Bloc()),
                ChangeNotifierProvider<CategoryTab4Bloc>(create: (context) => CategoryTab4Bloc()),

              ],
              child: MaterialApp(
                  debugShowCheckedModeBanner: false,
                  supportedLocales: context.supportedLocales,
                  localizationsDelegates: context.localizationDelegates,
                  navigatorObservers: [firebaseObserver],
                  locale: context.locale,
                  theme: ThemeModel().lightTheme,
                  darkTheme: ThemeModel().darkTheme,
                  themeMode: mode.darkTheme == true ? ThemeMode.dark : ThemeMode.light,
                  home: const SplashPage()
              )
          );
        },
      ),
    );
  }
}

内容的提问来源于stack exchange，提问作者Fred_Wolfe