Warning: Failed prop type: The prop history is marked as required in Router, but its value is undefined.
"react-router": "^5.1.2"
import React from 'react';
import ReactDOM from 'react-dom';
import { Router, Route } from 'react-router'
import './index.css';
import App from './App';
import * as serviceWorker from './serviceWorker';
ReactDOM.render((
<Router>
<Route path="/" component={App}/>
{/* <Route path="/repos" component={Repos}/>
<Route path="/about" component={About}/> */}
</Router>
), document.getElementById('root'))
serviceWorker.unregister();
查了好久，都说是版本问题，换了n个版本，还是会报错，后来看到说要从react-router-dom引入，所以安装了以后,像下面这样写，不知道有没有跟我一样脑回路不一般。
import { Router, Route } from 'react-router-dom'
依然报错，对于我这样的小白来说真的是很折磨了，后来终于发现还是格式不对，主要原因还是由于Router更新api所导致，具体解决方案，参照React api文档中内容 https://reacttraining.com/react-router/web/api/Route 将路由引入方式作出如下修改即可。最后改成这样终于好了。
import { HashRouter as Router, Route } from 'react-router-dom'
虽然是个很小的问题，解决了也很高兴，我就是这么的容易满足，不过react-router中还是有很多东西是我不知道的，学习的路还很长，加油吧！
