Create Before Single Post Loop Widget Exclude 404 Page Genesis.php

//* Register widget areas
genesis_register_sidebar( array(
	'id'          => 'before-loop',
	'name'        => __( 'Before Single Post Loop, '$text_domain' ),
	'description' => __( 'Adds a Widget Area Before Single Posts', '$text_domain' ),
) );

add_action( 'genesis_before_loop', 'before_loop_widget' );

function before_loop_widget() {

if ( is_single() && is_active_sidebar('before-loop') || !is_404() ) {

		genesis_widget_area( 'before-loop', array(
			'before' => '<div class="before-loop" class="widget-area">',
			'after'	 => '</div>',
		) );



     }

}