Invalid http_host header
<p>I am trying to develop a website using Django framework and launched using DigitalOcean.com and deployed the necessary files into django-project.</p>

<p>I had to include static files into Django-project and After collecting static files, I tried to refresh my ip </p>

<p>I am including the tutorials which I have used to create the website.
<a href="https://www.pythonprogramming.net/django-web-server-publish-tutorial/" rel="noreferrer">https://www.pythonprogramming.net/django-web-server-publish-tutorial/</a></p>

<p>I am getting the following error : </p>

<blockquote>
  <p>DisallowedHost at / Invalid HTTP_HOST header: '198.211.99.20'. You may
  need to add u'198.211.99.20' to ALLOWED_HOSTS.</p>
</blockquote>

<p>Can somebody help me to fix this ? This is my first website using Django framework.</p>