I’m trying to build flutter application, and I’m encountering an error when running the app on Android. The same code works perfectly fine on iOS. The error message is:
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PathNotFoundException: Cannot open file, path = ‘assets/crt/ca_bundle.crt’ (OS Error: No such file or directory, errno = 2)

The error is happening in the following class:

import 'dart:io';
import 'package:grpc/grpc.dart';
import 'package:injectable/injectable.dart';
import 'package:test/src/core/secure/secure_storage_service.dart';
import 'package:test/src/features/auth/data/interceptor/auth_interceptor.dart';
import '../../../../generated/user.pbgrpc.dart';

@Injectable()
class UserServiceHandler extends UserServiceClient {
  UserServiceHandler(SecureStorageService storageService)
      : super(
          ClientChannel(
            _host,
            port: 50051,
            options: ChannelOptions(
              credentials: ChannelCredentials.secure(
                certificates: File('assets/crt/ca_bundle.crt').readAsBytesSync(),
              ),
            ),
          ),
          interceptors: [AuthInterceptor(storageService)],
          options: CallOptions(
            timeout: const Duration(seconds: 30),
          ),
        );
  static String get _host {
    return 'mob.gopass.kz';
  }
}

In my pubspec.yaml, I have listed the assets like this:

flutter:
  uses-material-design: true
  assets:
    - assets/certs/
    - assets/translations/
    - assets/
    - assets/icons/
    - RiveAssets/

I’m not sure why the file cannot be found on Android but works fine on iOS.