functions fatal erro

Hi I was adding a custom menu to the functions.php file
The menu was too long so I duplicated this code:

add_action( 'init', 'my_custom_menus' );
function my_custom_menus() {
	register_nav_menus(
		array(
			'Footer-nav' => __( 'Footer-nav' ),

		)
	);
}

instead of doing this

add_action( 'init', 'my_custom_menus' );
function my_custom_menus() {
	register_nav_menus(
		array(
			'Footer-nav' => __( 'Footer-nav' ),
			'Footer-nav_two' => __( 'Footer-nav_two' ),
		)
	);
}

I am using the editor in the admin

here is the domain:

Now the site is broke and I get this error:

Fatal error: Cannot redeclare my_custom_menus() (previously declared in /…/sitedomain/html/wp-content/themes/custom/functions.php:477) in /…/sitedomain/html/wp-content/themes/custom/functions.php on line 492