Internal Server Error

[FoxNET Support]

Hello 
I use Centos 7 NGINX, and the version of Kolab (v.16) 
Installation succeeded. 
I used to NGINX web server instead of Apache. 
It works, except that I constantly errors of this type. 

Internal Server Error 

Can you tell me what it is I have to do what? 

Yours 
Michel 
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