[SOLVED] dart & flutter - cloud function execution error from client and server

src/server.dart:115:25: Error: Method not found: 'main'.
              user_code.main(context)
                        ^^^^
src/server.dart:125:38: Error: Method not found: 'main'.
            output = await user_code.main(context);
                                     ^^^^
Error: AOT compilation failed
Generating AOT kernel dill failed!```


Am unable to detect what the error is
Kindly assist if you can

  final client = Client();

  // Uncomment the services you need, delete the ones you don't
  // final account = Account(client);
  // final avatars = Avatars(client);
  // final database = Databases(client);
  // final functions = Functions(client);
  // final health = Health(client);
  // final locale = Locale(client);
  // final storage = Storage(client);
  // final teams = Teams(client);
  // final users = Users(client);

  client
      .setEndpoint("https://cloud.appwrite.io/v1")
      .setProject(projectId)
      .setKey("API_KEY")
      .setSelfSigned(status: true);
  emptier();
  setter();
  // api from env var
  apiToken = (req.variables['DAMMY_GONGOZ_API']);
  // decode user request
  userRequest = await jsonDecode(req.payload);

  // decide which service
  superResponse = await whichServiceExec();
  {
    res.json({
      'Status': superResponse,
    });
  }
}```