Server error.

Hi to every one.

After deleted and user that was on line I got and error when I am trying to browse my elgg web:

 

 

Server error.

The website encountered an error while retrieving http://www.example.com/. It may be down for maintenance or configured incorrectly.

Here are some suggestions:

image More information on this error

Below is the original error message

HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request.

 I backup  everything and them upload all file again to rewrite all directory but did not fix de problem. what can I do?