Debug - RT

Hi Folks!

I want to use interactive debug for RT, I saw this information
Debug - Request Tracker Wiki, but when i try to use,
doesn’t work.

My configuration file is /etc/httpd/conf.d/perl.conf


DocumentRoot /opt/rt3/share/html
AddDefaultCharset UTF-8

# optional apache logs for RT
 ErrorLog /opt/rt3/var/log/apache2.error
 TransferLog /opt/rt3/var/log/apache2.access
use Apache::DB (); Apache::DB->init;
<Location />
  PerlFixupHandler Apache::DB
PerlRequire "/opt/rt3/bin/"

<Location /NoAuth/images>
    SetHandler default
<Location />
    SetHandler perl-script
    PerlResponseHandler RT::Mason

Thanks in advance!