video_player 강의 관련 질문드립니다

import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
import 'package:videoplayer/component/video_player.dart';

class HomeScreen extends StatefulWidget {
  const HomeScreen({super.key});

  @override
  State<HomeScreen> createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  XFile? video;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: video == null? renderEmpty() : renderVideo()
    );
  }

  Widget renderVideo(){
    return Center(
      child: CustomVideoPlayer(video: video!),
    );
  }

  Widget renderEmpty(){
    return Container(
      width: MediaQuery.of(context).size.width,
      decoration: getBoxDecoration(),
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Logo(
            onLogoTap: onLogoTap,
          ),
          SizedBox(
            height: 10.0,
            width: 10.0,
          ),
          Name(),
        ],
      ),
    );
  }

  void onLogoTap() async {
    final PickedVideo = await ImagePicker().pickVideo(
        source: ImageSource.gallery
    );

    if(PickedVideo != null){
      print("success");
      setState(() {
        this.video = PickedVideo;
      });
    }
  }

  BoxDecoration getBoxDecoration(){
    return BoxDecoration(
        gradient: LinearGradient(
          begin: Alignment.topCenter,
          end: Alignment.bottomCenter,
          colors: [
            Colors.lightBlue,
            Colors.black,
          ],
        )
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    final textstyle = TextStyle(
        color: Colors.white,
        fontSize: 30,
        fontWeight: FontWeight.w100
    );
    return Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Text(
            'Video',
            style: textstyle
        ),
        SizedBox( //공백
          width: 8.0,
        ),
        Text(
            'Player',
            style: textstyle.copyWith(
              fontWeight: FontWeight.w800,
            )
        ),
      ],
    );
  }
}

class Logo extends StatelessWidget {
  final VoidCallback onLogoTap;
  const Logo({super.key,required this.onLogoTap});

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      child: Image.asset(
        'asset/image/logo.png',
      ),
      onTap: onLogoTap,
    );
  }
}

------------------------------video player 스크린 코드--------
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
import 'package:video_player/video_player.dart';

class CustomVideoPlayer extends StatefulWidget {
  final XFile video;
  const CustomVideoPlayer({super.key,required this.video});

  @override
  State<CustomVideoPlayer> createState() => _CustomVideoPlayerState();
}

class _CustomVideoPlayerState extends State<CustomVideoPlayer> {
  VideoPlayerController? video_controller;

  @override
  void initState(){
    // TODO: implement initState
    super.initState();

    InitializeController();
  }

  InitializeController() async {
    video_controller = VideoPlayerController.file(
        File(widget.video.path)
    );

    await video_controller!.initialize();

    setState(() {

    });
  }

  @override
  Widget build(BuildContext context) {
    if (video_controller == null){
      return CircularProgressIndicator();
    }

    return VideoPlayer(video_controller!);
  }
}

수업을 따라가며 코드를 작성하였는데도 동영상을 넣어보면 video_controller가 null값을 가지고 있어 로딩창만 나옵니다.
어디가 잘못된 지 알수 없어 GitHub에 올려주신 완성된 코드를 사용해보았으나이렇게밖에 나오지 않습니다. 안드로이드나 ios가 아닌 웹으로 실행해서 그런것인가요?