Edit File: footer-widgets.php
<?php /** * Displays the footer widget area. * * @package WordPress * @subpackage Twenty_Twenty_One * @since Twenty Twenty-One 1.0 */ if ( is_active_sidebar( 'sidebar-1' ) ) : ?> <aside class="widget-area"> <?php dynamic_sidebar( 'sidebar-1' ); ?> </aside><!-- .widget-area --> <?php endif; ?>