加载“@tensorflow-models/coco-ssd”时收到“无法读取未定义的属性'fetch'”

问：

我正在 React Native 中开发一个应用程序，其主要目的是从图库中选择一个视频并在其上运行对象检测模型。我目前正在使用一个名为“coco-ssd”的 TensorFlow 模型。

根据他们的文档，我首先需要加载模型，然后再继续。但是，我在这里遇到了一个问题：当我尝试加载模型时，它会抛出错误“无法读取未定义的属性'fetch'”。这是我的代码： -

import React, {useEffect, useState} from 'react';
import {Button, SafeAreaView, View} from 'react-native';
import {launchImageLibrary} from 'react-native-image-picker';
import * as cocossd from '@tensorflow-models/coco-ssd';
import * as tf from '@tensorflow/tfjs';
import '@tensorflow/tfjs-react-native';

function App(): JSX.Element {
  const [videoUri, setVideoUri] = useState(null);

  const loadCocoModel = async () => {
    try {
      await tf.ready();
      console.log('Tensorflow ready');
      const model = await cocossd.load();
      console.log('Handpose model loaded.');
      detect(model);
    } catch (error) {
      console.log(error);
    }
  };

  useEffect(() => {
    loadCocoModel();
  }, []);

  const detect = (model: cocossd.ObjectDetection) => {
    console.log('TODO: implement detect');
  };

  const selectVideo = async () => {
    try {
      const response: any = await launchImageLibrary({
        mediaType: 'video',
      });
      if (!response.didCancel && response.assets.length > 0) {
        setVideoUri(response.assets[0].uri);
      }
    } catch (error) {
      console.log(error);
    }
  };

  return (
    <SafeAreaView>
      <View
        style={{
          justifyContent: 'center',
          alignItems: 'center',
          height: '100%',
        }}>
        <Button title="Select Video" onPress={selectVideo} />
      </View>
    </SafeAreaView>
  );
}

export default App;

我希望有解决此问题的解决方案或建议。提前感谢您的帮助。