Probleme mit Rocking Blogroll

function tp_show_blogroll_rss_links( $args = array() ) {
    $default_args = array ( 
        'show_items' => -1 , 
        'category' => 0,
        'item_order' => 'link_name ASC',
        'older_than' => 168,
        'show_date' => 0,
        'show_image' => 'show-no-images',
        'thumb_size' => 50,
        'show_summary' => 1,
        'summary_length' => 100);
    $args = wp_parse_args( $args, $default_args );
    extract( $args );
   
    $show_items = (int) $show_items;
    $category = (int) $category;
    $older_than = (int) $older_than;
    $show_date = (int) $show_date;
    $thumb_size = (int) $thumb_size;
    $show_summary = (int) $show_summary;
    $summary_length = (int) $summary_length;
   
    global $wpdb;
           
    if ( $category != 0 )
        $qu_cat_t = " AND tt.term_id = $category ";
   
    //zum Ausrechnen nur Links, deren letzter Artikel innerhalb der letzten 48 Stunden geschrieben wurde
    date_default_timezone_set("Europe/Berlin");
    $datum = date("Y-m-d H:i",mktime(date(H)-$older_than,date(i),1,date(m),date(d),date(Y)));
   
    $queryString = "
        SELECT link_url, link_name, link_image, link_target, link_description, link_last_post_url, link_last_post_title, link_last_post_excerpt, link_last_post_date FROM $wpdb->links
        INNER JOIN $wpdb->term_relationships AS tr ON ($wpdb->links.link_id = tr.object_id) 
        INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_taxonomy_id = tr.term_taxonomy_id
        WHERE $wpdb->links.link_visible = 'Y'
        AND $wpdb->links.link_rss != ''
        AND $wpdb->links.link_last_post_url != ''
        AND $wpdb->links.link_last_post_date >= '$datum'
        AND tt.taxonomy = 'link_category'
        $qu_cat_t
        Order by $item_order";
    if ( $show_items != -1)
        $queryString .= " LIMIT $show_items";
       
    $blr_links = $wpdb->get_results($queryString);
           
    echo '<ul>';
   
    foreach ($blr_links as $blr_link) :   
           
        echo '<li style="list-style-type:none">';
       
        //Bilder Anzeige
        if ($show_image != "show-no-images") {
            if ( $show_image == "show-my-own-images" && $blr_link->link_image != "" ) { 
                echo '<div style="float:left; margin:3px 3px 3px 0;">
                    <img style="width:'.$thumb_size.'px;" 
                    src="'.$blr_link->link_image.'" alt="'.$blr_link->link_name.'" title="'.$blr_link->link_name.'" />
                    </div>';
            }
       
            if ( $show_image == "create-thumbnails" ) { 
                echo '<div style="float:left; margin:3px 13px 3px 0;">
                    <img 
                    src="https://thumber.de/image/?size=S&amp;url='.$blr_link->link_url.'" class="rounded"
                    alt="'.$blr_link->link_name.'" title="'.$blr_link->link_name.'"/>
                    </div>';
            }
        }
       
        //Blogroll Link
        echo '<b><a target="'.$blr_link->link_target.'" ';
        echo 'href="'.$blr_link->link_url.'" title="'.$blr_link->link_description.'">'.$blr_link->link_name.'</a></b><br />';
       
        //Link letzter Artikel
        echo '<a target="'.$blr_link->link_target.'" ';
        echo 'href="'.$blr_link->link_last_post_url.'" title="'.$blr_link->link_last_post_title.'">'.$blr_link->link_last_post_title.'</a>';
       
        //Feed Auszug
        if ($show_summary) {
            $blr_excerpt = wp_specialchars_decode($blr_link->link_last_post_excerpt);
            $desc = t_s_b_r_l_shorten($blr_excerpt,$summary_length);
            echo ': <cite>'.$desc;
            if ($show_date) {
                $blr_date = $blr_link->link_last_post_date;
                $blr_date = date("d.m.Y H:i",strtotime($blr_date));
                echo ' ('.$blr_date.')';
            }
            echo '</cite><br /><br />';
        }
       
        if ( $show_image != "show-no-images" ) {
            echo '<div style="clear:both;"></div></li>';
        } else {
            echo '</li>';
        }
   
    endforeach;
   
    echo '</ul>';
   
    if ( $show_image == "create-thumbnails") {
        echo'<br /><p class="zentriert">
            <a target="_blank" href="https://thumber.de" title="Thumbshots by Thumber.de">Thumber.de</a></p>';
    }   
}

include 'xxx/wp-blog-header.php';
global $wpdb;
$blr_query = ( " SELECT link_id, link_rss FROM $wpdb->links
                WHERE link_rss != '' " );
$blr_result = $wpdb->get_results($blr_query);
if ( !empty($blr_result) ) {
    add_filter( 'wp_feed_cache_transient_lifetime', create_function( '$a', 'return 1800;' ) );
    include_once(ABSPATH . WPINC . '/feed.php');
   
    echo "<ol>";
    foreach ( $blr_result as $link ) :
   
        $blr_url = esc_attr($link->link_rss);           
        $blr_rss = fetch_feed($blr_url);
       
        if ( is_wp_error($blr_rss) ) {
            unset($blr_rss);
            continue;
        } else { 
            $blr_rss_items = $blr_rss->get_items( 0, $blr_rss->get_item_quantity(1) ); 
               
            foreach ( $blr_rss_items as $item ) :
           
                $blr_feed_url = $item->get_permalink();
                $blr_feed_title = $item->get_title();
                $blr_feed_excerpt = $item->get_description();
                $blr_feed_date = $item->get_date("Y-m-d H:i:s");
                   
                $blr_insert_furl = $wpdb->escape($blr_feed_url);
                $blr_insert_ftitle = $wpdb->escape($blr_feed_title);
               
                $blr_insert_fexcerpt = $wpdb->escape($blr_feed_excerpt);
                               
                $blr_id = $link->link_id;
                date_default_timezone_set("Europe/Berlin");
                $blr_time = date("Y-m-d H:i:s");
                   
                $wpdb->update ( $wpdb->links, 
                    array( 'link_last_post_url' => $blr_insert_furl, 'link_last_post_title' => $blr_insert_ftitle, 'link_last_post_excerpt' => $blr_insert_fexcerpt, 'link_last_post_date' => $blr_feed_date, 'link_last_update_gmt' => $blr_time ), 
                    array( 'link_id' => $blr_id )
                    );
               
                echo "<li>Erfolgreicher Update des letzten Feedartikel f&uuml;r Link ID = ".$blr_id.", Zeitstempel: ".$blr_time."</li>";
       
            endforeach;
            remove_filter( 'wp_feed_cache_transient_lifetime', create_function( '$a', 'return 1800;' ) );
        }       
    endforeach; 
    echo "</ol>";
}