Apache 2.4 Error: FCGI: attempt to connect to Unix domain socket /run/php/php7.0-fpm.sock (*) failed
<p>I have updated my working Froxlor installation to PHP 7. 
All my customer-sites work perfectly fine (with PHP 7 via FPM). </p>

<p>The only problem is, that if I want to access the Froxlor Backend, I get an Erorr 503. 
The apache Error-Log says:</p>

<pre><code>`[Tue Oct 11 10:01:04.067069 2016] [proxy:error] [pid 23949] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /run/php/php7.0-fpm.sock (*) failed`
`[Tue Oct 11 10:01:04.089648 2016] [proxy_fcgi:error] [pid 23949] [client xx.xx.xx.xx:1819] AH01079: failed to make connection to backend: httpd-UDS`
</code></pre>

<p>The Error-Log of PHP-FPM says nothing. </p>

<p>The same thing happens, if I try to access the server directly via IP.</p>

<p>System-Details:</p>

<ul>
<li>Debian 8</li>
<li>Apache 2.4</li>
<li>PHP7</li>
<li>PHP7-FPM</li>
</ul>

<p>Where I have to serach for the Problem? If needed, config-files can be provided.</p>