TypeError: Cannot read property 'object' of undefined ./src/components/App.js C:/Project/reduxreactcory/src/components/App.js:16 13 | } 14 | 15 | App.Proptypes = { > 16 | children: Proptypes.object.isRequired 17 | }; 18 | 19 | export default App;

app.js

import React, { Component , Proptypes } from 'react';
import './App.css';

class App extends Component {
  
  constructor(props)
  {
     super(props);
     console.log(this.props.data);
  }
  render() {
    return (
      <div className="App">
        <p>Header here...</p>
        {this.props.data}
      </div>
    );
  }
}

export default App;

index.js

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import {Route, Router} from 'react-router';
import {BrowserRouter} from 'react-router-dom';
import {render} from 'react-dom';
import registerServiceWorker from './registerServiceWorker';
import routes from './routes';
import AboutPage from './components/about/AboutPage';
import HomePage from './components/home/HomePage';
import App from './components/App';



render(< App routes={routes} />,
document.getElementById('root'));
registerServiceWorker();

route.js

import React from 'react';
import {Route, Switch} from 'react-router';
import App from './components/App';
import HomePage from './components/home/HomePage';
import AboutPage from './components/about/AboutPage';

const routes = () => (
    <Switch>
        <Route exact path="/" component={App}></Route>
        <Route path="home" component={HomePage} />
        <Route path="about" component={AboutPage} />
    </Switch>
    
);

export default routes;