After memcached install PHP Error 500

Hi,

i installed Nextcloud and tried to fix the Problems that the Admin Interface showed me.
After I installed memchached i just get PHP Error 500.
I tried for Hours to fix this thing but i can´t.

Here is the Error:
[Thu Oct 26 00:44:54.584849 2017] [:error] [pid 1771] [client 93.238.193.103:51455] PHP Fatal error: Uncaught Error: Call to a member function getLogger() on null in /var/www/html/cloud.Blah.eu/public_html/index.php:69\nStack trace:\n#0 {main}\n thrown in /var/www/html/cloud.hlawatschke.eu/public_html/index.php on line 69

I really dont know what to do…
Please help

Have you:

  • Installed aPCU
  • Ensured the module is enabled
  • Restarted Apache
  • Edited the config.php file correctly

I tried everything.
I searched for hours for a fix but couldn´t find something that works.

aPCU installed, memcached running, edited config.php
restartet everrything ^^

Edit:

I looked again in the error.log and now i recieve another error:
[Thu Oct 26 09:46:20.685617 2017] [:error] [pid 4796] [client 80.187.105.13:29242] PHP Fatal error: Uncaught Error: Call to a member function getRequest() on null in /var/www/html/cloud.hlawatschke.eu/public_html/remote.php:47\nStack trace:\n#0 /var/www/html/cloud.hlawatschke.eu/public_html/remote.php(167): handleException(Object(ParseError))\n#1 {main}\n thrown in /var/www/html/cloud.hlawatschke.eu/public_html/remote.php on line 47