我在侧边栏上添加了一个小部件，但没有显示特色图像。

这是我的侧栏代码：

<?php
/**
 * The Sidebar containing the main widget areas.
 *
 * @package PowerMag
 * @since PowerMag 1.0
 */
?>
    <div id="sidebar" <?php if ( of_get_option(\'pm_sidebar_position\') == \'sidebar-content\' ) { echo \'class="span4"\'; } ?> >




        <div id="secondary" role="complementary">

        <?php do_action( \'before_sidebar\' ); ?>         

        <?php 

                //Select wich sidebar will be display
                $selected_sidebar_replacement = \'sidebar-1\'; //Default Sidebar

                //If is page or single.
                if(is_singular()){

                    global $wp_query;
                    $post = $wp_query->get_queried_object();
                    $selected_sidebar_replacement = get_post_meta($post->ID, \'sbg_selected_sidebar_replacement\', true);

                    //If default selected
                    if($selected_sidebar_replacement == \'0\' || $selected_sidebar_replacement == \'\'){
                        $selected_sidebar_replacement = \'sidebar-1\';
                    }

                    // Reset the global $the_post as this query will have stomped on it
                    wp_reset_query();

                }       

                if (function_exists(\'dynamic_sidebar\') && dynamic_sidebar($selected_sidebar_replacement)) : else : ?>

            <p>You selected an empty sidebar, try populating it with some awesome widgets!</p>

            <?php endif; // end sidebar widget area ?>
        </div><!-- #secondary -->
    </div><!-- #sidebar -->