[🌎 Easy Localization] [WARNING] Localization key [updating] not found

[qiuweilu]

assets:

• assets/translations/

WidgetsFlutterBinding.ensureInitialized();
await EasyLocalization.ensureInitialized();

import 'boot.dart';
import 'config/route_conf.dart';
import 'constant/app_const.dart';
import 'constant/sys_const.dart';
import 'package:flutter/material.dart';
import 'package:flutter/foundation.dart';
import 'package:device_preview/device_preview.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:easy_localization/easy_localization.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

bool devicePreview = false;

///QWL v2.1
void main() {
  Boot.init().then(
    (value) => runApp(
      EasyLocalization(
        path: SysConst.translationsDir,
        fallbackLocale: Locale('en'),
        supportedLocales: [Locale('en'), Locale('zh')],
        child: devicePreview
            ? DevicePreview(
                enabled: !kReleaseMode,
                builder: (context) => const ProviderScope(child: MyApp()),
              )
            : const ProviderScope(child: MyApp()),
      ),
    ),
  );
}

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

  @override
  Widget build(BuildContext context) {
    return ScreenUtilInit(
      minTextAdapt: true,
      splitScreenMode: true,
      designSize: Size(SysConst.width, SysConst.height),
      builder: (_, child) {
        return MaterialApp.router(
          locale: context.locale,
          theme: AppConst.whiteThemeData,
          debugShowCheckedModeBanner: false,
          routerConfig: RouteConf.routerConfig,
          supportedLocales: context.supportedLocales,
          localizationsDelegates: context.localizationDelegates,
        );
      },
    );
  }
}

All the above code is correct, but I introduced easy_localization in the FileUtil utility class and directly used tr("updating") or "updating".tr(), and it reported an error as shown in the title.

import 'package:easy_localization/easy_localization.dart';
class FileUtil {
    static Future<void> updateApp(String downloadUrl) async {
        .... tr("updating") .....
    }
}

[qiuweilu]

easy_localization: ^3.0.7