Error 500 when click on check

Hi! Im testing the system! but when i click on check availability i have Internal Server Error. Any advice?

Issue says:

20140318T143935: mysite.com.ar/index.php
PHP Fatal error: Call to a member function get() on a non-object in /hermes/bosnaweb03a/b2751/ipg.exportphonecom/pickbs/websclientes/latel/templates/citylife/layouts/default/layout.php on line 15

First lines of that file:
<?php
/*
CityLife template for Joomla!
Commercial Software
Copyright 2013 joomlaxtc.com
All Rights Reserved
www.joomlaxtc.com
*/
defined( '_JEXEC' ) or die;

JHtml::_('behavior.framework');$document =JFactory::getDocument();
$app = JFactory::getApplication();
$menu = $app->getMenu()->getActive();

$pageclass = $menu->params->get('pageclass_sfx');
$pageview = xtcIsFrontpage() ? 'frontpage' : 'innerpage';
$user =JFactory::getUser();
$params = $templateParameters->group->$layout; // We got $layout from the index.php
// Use the Grid parameters to compute the main columns width
$grid = $params->xtcgrid;
$style = $params->xtcstyle;
$typo = $params->xtctypo;
$css3 = $params->xtccss3;

Thanks in advance!!

Hi,

From the error message above, the issue comes from your template, you can confirm by using another template or switch back to the default Joomla template (Protostar).