mod_prometheus: Ensure mod_http is loaded where the http interface is exposed (thanks Martin) Loading mod_http globally does not have the desired effect, it needs to be loaded in the host context where module:provides is called.

<tr>
  <th>What is {x} {op} {y}?</th><td>
    <input name="captcha_challenge" type="hidden" value="{challenge}">
    <input name="captcha_reply" pattern="[0-9]+" required type="number">
  </td></tr>