Fix quotes: " -> '

src/App.js

@@ -6,7 +6,7 @@ import './App.css';
 
 const App = () => (
 	<Switch>
-		<Route exact path="/" component={Home} />
+		<Route exact path='/' component={Home} />
 	</Switch>
 );
 

src/Home.js

@@ -4,7 +4,7 @@ import './Home.css';
 class Home extends React.Component {
 	render() {
 		return (
-			<div className="Home">
+			<div className='Home'>
 				Hello world!
 			</div>
 		);