Scaffold widgets require a MediaQuery widget anscestor

(This is my first post so please excuse the poor format and mistakes)
I hope you all are doing great.
I am new to dart and programming, and I can’t figuere out how to solve this.

.I have tried adding MaterialApp, which seems to be the solution everyone online is recommending but to no avail. please help

import 'package:flutter/material.dart';



void main() => runApp(
  MaterialApp(home: ScaffoldExample())
);

class ScaffoldExample extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(
          "Scaffold",),
        centerTitle: true,
      ),
    ); // scaffold
  }
}

>Solution :

run these commands in terminals hope this will help you

>> flutter clean

>> flutter pub get

if this didn’t worked try stopping and restarting the app. let me know if this help you or not.