title: Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA
body: <p>I've been following <a href="https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-16-04" rel="nofollow noreferrer">this tutorial</a> to add SSH Certification to my site. However at the moment this method <a href="https://community.letsencrypt.org/t/solution-client-with-the-currently-selected-authenticator-does-not-support-any-combination-of-challenges-that-will-satisfy-the-ca/49983" rel="nofollow noreferrer">does not work for the time-being due to a security flaw, so here is the alternate method</a>. I'm trying to implement the alternate code-paste: <code>sudo certbot --authenticator webroot --webroot-path &lt;path to served directory&gt; --installer nginx -d &lt;domain&gt;</code> however am not sure what to put in <code>&lt;path to served directory&gt;</code>.  </p>
  
  <p>Is the "path to served directory" the nginx config? Would it look something like this: <code>etc/nginx/sites-available/&lt;projectname&gt;</code>?</p>