rtgui error message

I have installed rtorrent libtorrent, rtgui etc from this guide: http://www.howtoforge.com/how-to-configure-rtgui-for-rtorrent

I try to reach mu rtgui from the web. Have open port 80 so I got access.

I got this error message:

Code:

Warning: file_get_contents(http://localhost/RPC2) [function.file-get-contents]: failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error in /var/www/rtgui/functions.php on line 10

 

Any errors in Apache's error log?

 

[Tue Aug 05 10:58:40 2008] [notice] Graceful restart requested, doing restart
apache2: apr_sockaddr_info_get() failed for htpc
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
[Tue Aug 05 10:58:40 2008] [notice] Apache/2.2.4 (Ubuntu) configured -- resuming normal operations
[Tue Aug 05 15:48:39 2008] [error] [client 213.132.124.3] File does not exist: /var/www/index.php

The error.log is very long. That's maybe interesting?

 

Are there any other errors in it?