Add Widget After All Single Posts

// Register custom widget
genesis_register_sidebar( array(
'id'    => 'after-content',
'name'  => __( 'After Post Content', 'child' ),
'description'   => __( 'This widget executes after your single posts content.', 'child' ),
) );
 
// Hook widget after single post content only
add_action( 'genesis_after_post_content', 'widget_after_content', 9 );
function widget_after_content() {
if ( is_single() && is_active_sidebar( 'after-content' ) ) {
echo '<div class="after-content"><div class="wrap">';
dynamic_sidebar( 'after-content' );
echo '</div></div>';
}
}