title: Heroku Updating SSL endpoint failed - No key found that signs the certificate
body: <p>I am trying to replace my SSL cert on my Heroku Rails app.</p>
  
  <p>I have reissued the SSL cert and am trying to update the SSL end point.</p>
  
  <p>However, When I run the following command I get this error.</p>
  
  <pre><code>heroku certs:update server.crt intermediate.crt server.key -a my_rails_app
  
  Resolving trust chain... failed
   !    No key found that signs the certificate.
  </code></pre>