Sites loading without design

Hi,

My Sites loads without any designs:


(only gitlab gives error 500, with logo ...) View attachment 10941

I am using an V-Server (from strato.de) with Ubuntu 14.04 LTS

I have tried to install on server (maybe some setting from it led to the trouble):
gitlab, owncloud and ZendGuardLoader with PHP5.5, maybe für future i will install PHP 5.6 and 7 to (for moto cms i need ZendGuardLoader with PHP5.5)

proxy_error_log says all...

Sites loading without design