Bugzilla shows only the text after installation finished

[tongnyson]

Below are words I got in my localhost/bugzilla.
Appreciated for any help or idea.

Thanks,
Tongny



#!/usr/bin/perl -wT
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.

################################################## #############################
# Script Initialization
################################################## #############################

# Make it harder for us to do dangerous things in Perl.
use strict;

# Include the Bugzilla CGI and general utility library.
use lib qw(. lib);

use Bugzilla;
use Bugzilla::Constants;
use Bugzilla::Error;
use Bugzilla::Update;

# Check whether or not the user is logged in
my $user = Bugzilla->login(LOGIN_OPTIONAL);
my $cgi = Bugzilla->cgi;
my $template = Bugzilla->template;
my $vars = {};

# And log out the user if requested. We do this first so that nothing
# else accidentally relies on the current login.
if ($cgi->param('logout')) {
Bugzilla->logout();
$user = Bugzilla->user;
$vars->{'message'} = "logged_out";
# Make sure that templates or other code doesn't get confused about this.
$cgi->delete('logout');
}

################################################## #############################
# Main Body Execution
################################################## #############################

# Return the appropriate HTTP response headers.
print $cgi->header();

if ($user->in_group('admin')) {
# If 'urlbase' is not set, display the Welcome page.
unless (Bugzilla->params->{'urlbase'}) {
$template->process('welcome-admin.html.tmpl')
|| ThrowTemplateError($template->error());
exit;
}
# Inform the administrator about new releases, if any.
$vars->{'release'} = Bugzilla::Update::get_notifications();
}

# Generate and return the UI (HTML page) from the appropriate template.
$template->process("index.html.tmpl", $vars)
|| ThrowTemplateError($template->error());