Error Asentio System

Non-static method Load::helper() should not be called statically, assuming $this from incompatible context

/home/norbert/domains/t8.pl/public_html/psy/app/modules/articles/articles.php [91]

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        $all count($row);
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        foreach($row as $r) {
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            $d = array();
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            $t_art$art_tpl;
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            Load::helper('url');
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            if($r['is_date']) $d[]= date("Y-m-d",$r['date']);
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            if($r['is_author'])  $d[]= $r['author'];
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            if(!empty($d)) $date implode(' / ',$d);
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            $link BASEURL.'/'.url_friendly($r['category']).'/'.$r['id'].','.url_friendly($r['title']).'.html';
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            $n strpos($r['content'],"#---#");