在expo项目中导入字体有什么问题

// app.json
{
  "expo": {
    "assetBundlePatterns": [
      "**/*"
    ],
    "ios": {
      "bundleIdentifier": "com.example.app"
    },
    "android": {
      "package": "com.example.app"
    }
  }
}

// app.config.js
module.exports = {
  expo: {
    assetBundlePatterns: ['**/*'],
    ios: {
      bundleIdentifier: 'com.example.app',
    },
    android: {
      package: 'com.example.app',
    },
  },
};

import * as Font from 'expo-font';

const loadFonts = async () => {
  await Font.loadAsync({
    'CustomFont-Regular': require('./assets/fonts/CustomFont-Regular.ttf'),
  });
};

export default loadFonts;

import React, { useEffect } from 'react';
import { Text } from 'react-native';
import loadFonts from './loadFonts';

const App = () => {
  useEffect(() => {
    loadFonts();
  }, []);

  return (
    <Text style={{ fontFamily: 'CustomFont-Regular' }}>Hello, World!</Text>
  );
};

export default App;