title: Whitelabel Error Page error (Spring Boot + React)
body: <p><code>localhost:9000</code> is opening fine on the browser. And if I navigate to a link from the menu like <code>localhost:9000/about</code>, it is working fine.</p>
  
  <p>But if I hit <code>localhost:9000/about</code> directly without going to <code>localhost:9000</code> then nothing happens on the local and if I do the same on server, following error is produced:</p>
  
  <blockquote>
    <p>Whitelabel Error Page This application has no explicit mapping for
    /error, so you are seeing this as a fallback.</p>
    
    <p>Mon Feb 12 14:09:05 IST 2018 There was an unexpected error (type=Not
    Found, status=404). No message available</p>
  </blockquote>
  
  <p>Please help!!</p>