如何使用react-native-camera包获取加载的不可用图像URL found for null来捕获图像

import React, { Component } from 'react';
import { View, Image } from 'react-native';
import { RNCamera } from 'react-native-camera';

class CameraScreen extends Component {
  constructor(props) {
    super(props);
    this.state = {
      imageUrl: null,
      error: null,
    };
  }

  handleImageCapture = async () => {
    try {
      const { uri } = await this.camera.takePictureAsync();
      this.setState({ imageUrl: uri, error: null });
    } catch (error) {
      this.setState({ error: 'Failed to capture image' });
    }
  };

  render() {
    const { imageUrl, error } = this.state;

    return (
      <View>
        {imageUrl ? (
          <Image source={{ uri: imageUrl }} style={{ width: 200, height: 200 }} />
        ) : (
          <RNCamera
            ref={(ref) => {
              this.camera = ref;
            }}
            style={{ flex: 1 }}
          />
        )}
        {error && <Text>{error}</Text>}
        <Button title="Capture Image" onPress={this.handleImageCapture} />
      </View>
    );
  }
}

export default CameraScreen;