do-wifi: this version worked fine

do_wifi.dart

import 'package:flutter/material.dart';
import 'package:app_settings/app_settings.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              MaterialButton(
                color: Colors.green,
                onPressed: () {
                  AppSettings.openAppSettings(type: AppSettingsType.hotspot);
                },
                child: const Text(
                  'Open settings',
                  style: TextStyle(
                    color: Colors.white,
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}