RECENTLY I MOVED TO APACHE 5.3

AND THIS IS WHAT I GOT

Not Acceptable

An appropriate representation of the requested resource /admin_utilities.php could not be found on this server.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

this error happens when i try to restore the site or save a photo

PLEASE HELP

MY SITE:

www.rodriguezuribe.co