You should not use Route or withRouter() outside a Router when using react-router 4 and styled-component in react

Make sure you wrap the main react render code in the Router. For example, with react-dom you need to wrap the app in Browser-Router. If this is a Udacity project, this is typically the index.js file.

import { BrowserRouter } from 'react-router-dom';

ReactDOM.render(
   <BrowserRouter>
     <App />
   </BrowserRouter>

  , document.getElementById('root'));