[console error] Unexpected javascript error from running app

[hanooms11-ux]

Relevant console output

Script error.

When did the error happen?

hh

Your Dart code

import 'package:flutter/material.dart';
main() { runApp( MyApp() ); }
class MyApp extends StatelessWidget{
  const MyApp({super.key});
  
  @override
  Widget build(BuildContext context){
     return MaterialApp(
       home: Scaffold(
         appBar: AppBar(title: const Text('Column Example')),
         body: _buildColumnWidget(),
       ),
     );
  }

  Widget _buildColumnWidget() {
     return Column(
        mainAxisAlignment: MainAxisAlignment.center,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget> [
          Container(
             height: 200,
             width: 50,
             color: Colors.red,
             child: const Center(child: Text("50"),),
          ),
          Container(
             height: 200,
             width: 100,
             color: Colors.green,
             child: const Center(child: Text("100"),), 
          ),
          Container(
             height: 200,
             width: 200,
             color: Colors.orange,
             child: const Center(child: Text("200"),), 
          ),
          Container(
             height: 200,
             width: 500,
             color: Colors.blue,
             child: const Center(child: Text("1000"),), 
          ),
          ]
     );
  }
}

What OS did this error occur on?

No response

What browser(s) did this error occur on?

No response

Do you have any additional information?

No response