Expo开发iOS端加载失败求助：Invariant Violation错误排查

我正在开发一个React Native项目，Android设备能正常加载，之前iOS也能运行，但近一周iOS端完全打不开。因为没有MacBook，我用Expo投屏到手机查看进度。

报错信息 #

iOS Bundling complete 1772ms
ERROR Invariant Violation: Your JavaScript code tried to access a native module that doesn't exist.
提示若使用Expo Go不支持的模块，需创建应用开发构建
ERROR Invariant Violation: "main" has not been registered. 可能原因：

1. Metro（本地开发服务器）运行目录错误，需检查Metro状态，停止后在当前项目重启
2. 模块加载失败导致未调用AppRegistry.registerComponent

相关代码片段 #

index.js

/**
 * @format
 */

import {AppRegistry} from 'react-native';
import App from './App';
import {name as appName} from './app.json';

AppRegistry.registerComponent(appName, () => App);

app.json

"expo": {
    "name": "Mapp",
    "slug": "Mapp",
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/MaAssets/images/Ma.png",
    "userInterfaceStyle": "light",
    "splash": {
      "image": "./assets/MaAssets/images/Ma.png",
      "resizeMode": "contain",
      "backgroundColor": "#000000",
      "animated": true
    },
    "updates": {
      "fallbackToCacheTimeout": 0
    },
    "assetBundlePatterns": [
      "**/*"
    ],
    "ios": {
      "supportsTablet": true

AppDelegate.m

NSDictionary *initProps = [self prepareInitialProps];
  UIView *rootView = RCTAppSetupDefaultRootView(bridge, @"Mapp", initProps);

内容的提问来源于stack exchange，提问作者noobcoder