[Flutter] package contacts_service problem when I run the program with this package? sorry I...

hello I hope you will be able to help me I am trying to use the contacts_service package: ^0.6.3 I just put this in the pubspec.yaml I did a pub get so far everything is going well but when I compile I get this error every time could you help me I am a beginner in flutter thank you very much for your help

FAILURE: Build failed with an exception.

• What went wrong: A problem occurred configuring project ':contacts_service'.

Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl. Namespace not specified. Specify a namespace in the module's build file. See https://d.android.com/r/tools/upgrade-assistant/set-namespace for information about setting the namespace.
​

If you've specified the package attribute in the source AndroidManifest.xml, you can use the AGP Upgrade Assistant to migrate to the namespace value in the build file. Refer to https://d.android.com/r/tools/upgrade-assistant/agp-upgrade-assistant for general information about using the AGP Upgrade Assistant.


the source

import 'package:flutter/material.dart';
import 'package:contacts_service/contacts_service.dart';
import 'packageermission_handler/permission_handler.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: ContactListPage(),
);
}
}

class ContactListPage extends StatefulWidget {
@override
_ContactListPageState createState() => _ContactListPageState();
}

class _ContactListPageState extends State<ContactListPage> {

@override
void initState() {
super.initState();
}

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Flutter Contact List'),
),

);
}
}`

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