related v snippet hlasi Call to a member function related() on a non-object

Zdravim, mam nasledovni problem. Kdyz pouziju foreach pod snippetem (articlesComment), tak mi nette hlasi chybu Call to a member function related() on a non-object. Kdyz vsak ten foreach spustim mimo snippetu vse jede jak ma. Nevite mi poradit co delam spatne? Komentare bych totiz potreboval refreshovat pres AJAX.

{snippet articlesComment}
    {foreach $row->related("tbl_comments","timeline_id") as $row_comments}
        <div class="col-lg-12 col-md-12 col-xs-12" style="padding:5px 0px 5px 0px;border-top:#EDEBE4 1px solid;">
            <img class="user-block-thumb" src="{DataModel::getProfileImage($row_comments->profile_id)}"/>
            {var $linkurl = DataModel::getProfileLinkUrl($row_comments->profile_id)}
            <span class="notification-item-header text-uppercase"><a n:href="$linkurl id=>$row_comments->profile_id" style="color:#a5987f;">{DataModel::getProfileName($row_comments->profile_id)}</a></span>
                {if DataModel::getPermission($row_comments->id,$logged_in_id,8)}
                <a style="position:absolute;right:10px;cursor:pointer;color:gray;font-size:13px;" data-toggle="tooltip" n:href="TimelineRemoveComment! id=>$row_comments->id" data-placement='top' title="{_ 'Delete'}"><i class="fa fa-times"></i></a>
                {/if}
            <span class="notification-item-event-time">{$row_comments->comment_date_time|date:'%d.%m.%Y'}|&nbsp;{$row_comments->comment_date_time|date:'H:i'}</span>
            <span class="notification-item-event" style="color:black">{$row_comments->comment}</span>
        </div>
    {/foreach}
{/snippet}

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