title: NET::ERR_CERT_AUTHORITY_INVALID https in red color
body: <p>When i try to access my ruby site from android mobile device i get following error, can anyone help me solving this problem.</p>
  
  <p><a href="https://i.stack.imgur.com/2Fbbd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2Fbbd.png" alt="https error"></a></p>
  
  <p>With following added error NET::ERR_CERT_AUTHORITY_INVALID</p>