Here’s the sidebar code from sidebar.php
<div id="sidebar">
<div style="margin-bottom: 10px;"><a href="<?php bloginfo('rss2_url'); ?>"><img src="<?php bloginfo('template_directory'); ?>/images/sidebar-feed.jpg" /></a></div>
<?php if (!dynamic_sidebar('Sidebar')) : ?>
<div class="sidebar-widget">
<div class="sidebar-header">Categories</div>
<div class="sidebar-content">
<ul>
<?php wp_list_categories('show_count=0&title_li='); ?>
</ul>
</div>
</div>
<div class="sidebar-widget">
<div class="sidebar-header">Archives</div>
<div class="sidebar-content">
<ul>
<?php wp_get_archives('type=monthly'); ?>
</ul>
</div>
</div>
<div class="sidebar-widget">
<div class="sidebar-header">Meta</div>
<div class="sidebar-content">
<ul>
<?php wp_register(); ?>
<li><?php wp_loginout(); ?></li>
<li><a href="https://validator.w3.org/check/referer" title="This page validates as XHTML 1.0 Transitional">Valid <abbr title="eXtensible HyperText Markup Language">XHTML</abbr></a></li>
<li><a href="https://gmpg.org/xfn/"><abbr title="XHTML Friends Network">XFN</abbr></a></li>
<li><a href="https://www.ads-software.com/" title="Powered by WordPress, state-of-the-art semantic personal publishing platform.">WordPress</a></li>
<?php wp_meta(); ?>
</ul>
</div>
</div>
<?php endif; // dynamic_sidebar ?>
</div>