Deploy docusaurus site (generated build files) offline inside flutter webview - flutter

Question

I just started develop a website using docusaurus and I want to run this website within flutter on mobile (android or ios) ,I thought of running the build files (index.html) through flutter webview, but by search i found it diffucult to run docusaurus site without webserver, I have tried way to host a local build of an docusaurus website in flutter webview by use local_assets_server flutter library
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:local_assets_server/local_assets_server.dart';
import 'package:webview_flutter/webview_flutter.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Local Assets Server Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Local Assets Server Demo'),
);
}
}
class MyHomePage extends StatefulWidget {
final String title;
MyHomePage({Key? key, required this.title}) : super(key: key);
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
bool isListening = false;
String? address;
int? port;
WebViewController? controller;
void _incrementCounter() {
controller?.evaluateJavascript('window.increment()');
}
#override
initState() {
_initServer();
super.initState();
}
_initServer() async {
final server = new LocalAssetsServer(
address: InternetAddress.loopbackIPv4,
assetsBasePath: 'web',
logger: DebugLogger(),
);
final address = await server.serve();
setState(() {
this.address = address.address;
port = server.boundPort!;
isListening = true;
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: isListening
? WebView(
debuggingEnabled: true,
initialUrl: 'http://$address:$port',
javascriptMode: JavascriptMode.unrestricted,
onWebViewCreated: (c) {
controller = c;
},
)
: Center(child: CircularProgressIndicator()),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}
but flutter webview give this message