title: (Why) Does Apigility only work in the development mode?
body: <p>In the <a href="https://www.apigility.org/documentation/intro/installation" rel="nofollow noreferrer">Apigility docu</a> is described, how to &quot;install&quot; <a href="https://www.apigility.org/" rel="nofollow noreferrer">Apigility</a>. There are several methods to do this, but the last step should alway be:</p>
  <pre><code>cd path/to/install
  php public/index.php development enable # put the skeleton in development mode
  </code></pre>
  <p>Without it the skeleton calls in browser and with an arror message:</p>
  <blockquote>
  <p>An error occurred</p>
  <p>An error occurred during execution; please try again later.</p>
  </blockquote>
  <ul>
  <li>Does Apigility only work without the development mode? If Yes -- why?</li>
  <li>What other modes are there? Where are they listed and described?</li>
  </ul>