Unhandled Error!

Trying to get property of non-object

Document	Product
Document type	CMS page
Line	11
Exception class	Cms_ExecutionException

Code Highlight

</section>
 
 
<? 
$longest_hierarchy = array();
 
        foreach ($product->category_list as $category)
        {
           $parents = $category->get_parents(true);
           if (count($longest_hierarchy) < count($parents))
          {
              $longest_hierarchy = $parents;
          }

#	Document	Type
1	Product	CMS page