Missing Sidebar.php script?

Hi, I have been unable to place any content in my primary sidebar menu. I’m trying get a categories menu in the primary sidebar. I’m using the WordPress Twenty-Fourteen theme. I believe the problem may be with the sidebar.php file, but I’m not sure. It looks like some coding may be missing from the file (my site was hacked a few weeks ago). This is all I have under the primary sidebar coding:

<div id="primary-sidebar" class="primary-sidebar widget-area" role="complementary">

<?php dynamic_sidebar( 'sidebar-1' ); ?>
	</div><!-- #primary-sidebar -->
	<?php endif; ?>
</div><!-- #secondary -->

Is this it or is there something missing? I’m fairly new at WordPress and coding, so please keep that in mind.