Why won't my Dart Video App code compile? - flutter

Question

I'm working on a Flutterflow project and when I attempt to compile my widget inside of the custom widget section it returns multiple errors. Here is the code directly from pub.dev and I am adding the dependencies in the right section but I am continually getting the same errors.
import 'package:video_player/video_player.dart';
void main() => runApp(const VideoApp());
/// Stateful widget to fetch and then display video content.
class VideoApp extends StatefulWidget {
const VideoApp({Key? key}) : super(key: key);
#override
_VideoAppState createState() => _VideoAppState();
}
class _VideoAppState extends State<VideoApp> {
late VideoPlayerController _controller;
#override
void initState() {
super.initState();
_controller = VideoPlayerController.network(
'https://flutter.github.io/assets-for-api-docs/assets/videos/bee.mp4')
..initialize().then((_) {
// Ensure the first frame is shown after the video is initialized, even before the play button has been pressed.
setState(() {});
});
}
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Video Demo',
home: Scaffold(
body: Center(
child: _controller.value.isInitialized
? AspectRatio(
aspectRatio: _controller.value.aspectRatio,
child: VideoPlayer(_controller),
)
: Container(),
),
floatingActionButton: FloatingActionButton(
onPressed: () {
setState(() {
_controller.value.isPlaying
? _controller.pause()
: _controller.play();
});
},
child: Icon(
_controller.value.isPlaying ? Icons.pause : Icons.play_arrow,
),
),
),
);
}
#override
void dispose() {
super.dispose();
_controller.dispose();
}
}