Unhandled Error!

Trying to get property of non-object

Document	Category
Document type	CMS template
Line	2
Exception class	Cms_ExecutionException

Code Highlight

<?
$title = $category->short_description ? $category->short_description : $category->name;
?>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title><?= h($title) ?></title>
 
  <meta http-equiv="Content-Language" content="en-us" />
  <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
  <meta name="keywords" content="<?= h($this->page->keywords) ?>" />

#	Document	Type
1	Category	CMS template