old_contents: import React, { Component } from 'react';
  import {
      BrowserRouter as Router,
      Route,
  } from 'react-router-dom'
  
  import '../styles/App.css';
  
  import Index from './Index'
  import { Navigation } from './layout'
  
  class App extends Component {
      render() {
          return (
              <Router>
                  <div>
                      <Navigation/>
                      <Route exact path="/" component={Index} />
                  </div>
              </Router>
          );
      }
  }
  
  export default App;
  
new_contents: import React, { Component } from 'react';
  import {
      BrowserRouter as Router,
      Route,
  } from 'react-router-dom'
  
  import '../styles/App.css';
  
  import Index from './Index'
  import { Navigation } from './layout'
  
  class App extends Component {
      render() {
          return (
              <Router>
                  <div>
                      <Navigation/>
                      <Route exact path="/wepickheroes" component={Index} />
                  </div>
              </Router>
          );
      }
  }
  
  export default App;
  
subject: Update index route