Arkadaşlar boredom teması yükledim ama sidebar hata veriyor.

elinde olan varmı bu temanın hatasız çalışanı
veya sorunu çözecek olan ?

ben çözemedim ne yapsam.

Fatal error:  Call to undefined function  wp_theme_switcher() in /home/karacode/public_html/wp-content/themes/boredom-001/sidebar.php on line 21

    <div id="sidebar">
        <ul>
            <li><h2><?php _e('Categories'); ?></h2>
                <ul>
                <?php list_cats(0, '', 'name', 'asc', '', 1, 0, 1, 1, 1, 1, 0,'','','','','') ?>
                </ul>
            </li>

            <ul> <?php wp_list_pages('sort_column=menu_order&title_li='); ?> </ul>

            <li><div id="sb_header"><h2><?php _e('Archives'); ?></h2></div>
                <ul>
                <?php wp_get_archives('type=monthly'); ?>
                </ul>
            </li>

            <li>
                <?php include (TEMPLATEPATH . '/searchform.php'); ?>
            </li>
            <li><div id="sb_header"><h2>Themes</h2></div>
                    <?php wp_theme_switcher(); ?>
              </li>
            <?php $link_cats = $wpdb->get_results("SELECT cat_id, cat_name FROM $wpdb->linkcategories");
            foreach ($link_cats as $link_cat) { ?>
                <li id="linkcat-<?php echo $link_cat->cat_id; ?>"><div id="sb_header"><h2><?php echo $link_cat->cat_name; ?></h2></div>
                    <ul>
                         <?php wp_get_links($link_cat->cat_id); ?>
                    </ul>
                </li>
            <?php } ?>
                <li><div id="sb_header"><h2><?php _e('Meta'); ?></h2></div>
                <ul>
                    <?php wp_register(); ?>
                    <li><?php wp_loginout(); ?></li>
                    <li><a href="http://wordpress.org/" title="<?php _e('Powered by WordPress, state-of-the-art semantic personal publishing platform.'); ?>">WordPress</a></li>
                    <?php wp_meta(); ?>
                </ul>
                </li>
        </ul>
    </div>
<div id="sidebar_bottom"></div>