<h1>Backend unavailable</h1>
<p>
  It seems that the PHP FPM service is not running. Make sure to start PHP FPM service in order to access Icinga Web 2.
  If you upgraded Icinga Web 2 recently, make sure to read the
  <a href="https://icinga.com/docs/icingaweb2/latest/doc/02-Installation/">docs regarding PHP FPM</a>,
  also locally available under <code>/usr/share/icingaweb2/doc/02-Installation.md</code>.
</p>