Error adding a new user

[MrJokazMan]

Dear listener,

I got a problem adding a new user. The following pictures, will help you to understand the problem.

This is a taken screenshot of the list where I can see all the users:



This is the message, when I restart Apache2:



This is the error message in the debugger:



And this is the line 143 in the config:



I hope you can help me. Thanks in Advance!

Sincerly,

MrJokazMan