adding blurred background with image in flutter

Profile.dart

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

class ProfilePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: ListView(
        children: <Widget>[
          Container(
            height: 140,
            decoration: BoxDecoration(
                image: DecorationImage(
                    image: NetworkImage(
                        'https://www.setaswall.com/wp-content/uploads/2018/04/1125x2436-Wallpaper-297.jpg'),
                    fit: BoxFit.cover)),
            child: BackdropFilter(
              filter: ImageFilter.blur(sigmaX: 10.0, sigmaY: 10.0),
              child: Container(
                decoration: BoxDecoration(color: Colors.white.withOpacity(0.0)),
                child: Row(
                  crossAxisAlignment: CrossAxisAlignment.center,
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    CircleAvatar(
                      radius: 60,
                      backgroundImage: NetworkImage(
                          'https://www.setaswall.com/wp-content/uploads/2018/04/1125x2436-Wallpaper-297.jpg'),
                    ),
                    SizedBox(width: 15,),
                    Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                      children: <Widget>[
                        Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: <Widget>[
                            Text('Kidi', style: TextStyle(
                                fontWeight: FontWeight.bold,
                                fontSize: 24,
                                color: Colors.white),),
                            Text('256,086 Followers', style: TextStyle(
                                fontWeight: FontWeight.w500, color: Colors.white
                            ),)
                          ],
                        ),
                        MaterialButton(
                          color: Colors.blue,
                          onPressed: () {},
                          child: Center(child: Text('Follow',
                            style: TextStyle(color: Colors.white),)),
                          height: 30,
                          minWidth: 120,
                        )
                      ],
                    )
                  ],
                ),
              ),
            ),
          )
        ],
      ),
    );
  }
}