Verdiğiniz dosyada aşağıdaki kodu bulun:

        foreach( $arr as $ele ) {
            if ( true == wfl_checkgroups( $ele['cid'] ) ) {
                if ( $xoopsModuleConfig['subcats'] == 1 ) {
                    $chtitle = $wfmyts -> htmlSpecialCharsStrip( $ele['title'] );
                    if ( $chcount > 6 ) {
                        $subcategories .= '...';
                        break;
                    } 
                    if ( $space > 0 ) {
                      $subcategories .= "<a href='" . XOOPS_URL . "/modules/" . $xoopsModule -> getVar( 'dirname' ) . "/viewcat.php?cat=$chtitle&amp;cid=" . $ele['cid'] . "' title='$chtitle'>" . $chtitle . "</a>, ";
                    }
                    $space++;
                    $chcount++;
                } 
            } 
        }

Bununla değiştirin:

		function seolulink($text){
			$tr = array('ş','Ş','ı','İ','ğ','Ğ','ü','Ü','ö','Ö','Ç','ç');
			$eng = array('s','S','i','I','g','G','u','U','o','O','C','c');
			$text = str_replace($tr,$eng,$text);
			$text = eregi_replace('[^0-9A-Za-z]',"-",$text);
			$text = preg_replace("@--*@","-",$text);
			return strtolower($text);
		}  

        foreach( $arr as $ele ) {
            if ( true == wfl_checkgroups( $ele['cid'] ) ) {
                if ( $xoopsModuleConfig['subcats'] == 1 ) {
                    $chtitle = $wfmyts -> htmlSpecialCharsStrip( $ele['title'] );
                    if ( $chcount > 6 ) {
                        $subcategories .= '...';
                        break;
                    } 
                    if ( $space > 0 ) {
                      $subcategories .= "<a href='" . XOOPS_URL . "/modules/" . $xoopsModule -> getVar( 'dirname' ) . "/viewcat.php?cat=".seolulink($chtitle)."&amp;cid=" . $ele['cid'] . "' title='$chtitle'>" . $chtitle . "</a>, ";
                    }
                    $space++;
                    $chcount++;
                } 
            } 
        }

Eğer hata alırsanız, burada aldığınız hatayı belirtin. Hata almazsanız, hayırlı olsun.