尝试打开相机时出现Flutter image_picker provider错误

dependencies:
  flutter:
    sdk: flutter
  image_picker: ^0.8.4+4
  provider: ^6.0.1

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

class CameraProvider extends ChangeNotifier {
  final ImagePicker _imagePicker = ImagePicker();
  PickedFile? _image;

  PickedFile? get image => _image;

  Future<void> openCamera() async {
    _image = await _imagePicker.getImage(source: ImageSource.camera);
    notifyListeners();
  }
}

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'camera_provider.dart';

class MyPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Camera Example'),
      ),
      body: Center(
        child: Consumer<CameraProvider>(
          builder: (context, cameraProvider, _) {
            return Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                if (cameraProvider.image != null)
                  Image.file(File(cameraProvider.image!.path)),
                ElevatedButton(
                  onPressed: () {
                    cameraProvider.openCamera();
                  },
                  child: Text('Open Camera'),
                ),
              ],
            );
          },
        ),
      ),
    );
  }
}