尽管配置正确，为什么我的React App仍未呈现？

Question

我正在尝试启动一个单页面的webapp，但是在使Firebase正常运行时遇到了一些问题。我使用create-react-app最初创建了项目。

本质上发生的是index.html已加载，但未呈现该应用程序。您可以在这里看到：https://pokerstudy.online/

index.js：

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import * as serviceWorker from './serviceWorker';
import {BrowserRouter} from 'react-router-dom';

import ReactGA from 'react-ga';

import firebase from 'firebase';

ReactGA.intialize('UA-134743808-1', { standardImplementation: true });
ReactGA.pageview(window.location.pathname + window.location.search);

ReactDOM.render(<BrowserRouter><App /></BrowserRouter>, document.getElementById('root'));

serviceWorker.unregister();

firebase.json

{
  "hosting": {
    "public": "build",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  },
  "storage": {
    "rules": "storage.rules"
  }
}

任何帮助将不胜感激！