xml sitemap does not display the correct number of images

Hi,

It’s OK with this code :

function wpseo_xmlsitemap_add_attached_images( $images, $post_id) { 
	$attached_images = get_attached_media( 'image', $post_id);
	if($attached_images){
		foreach($attached_images as $attached_image){
			$image_arr = array();
		    $image_arr['src'] = str_replace( 'https://XXXXX.com', 'https://CDN_XXXXX.kinstacdn.com', $attached_image->guid );
			$images[] = $image_arr;
		}
	}
	array_unique($images);
    return $images;
}; 

add_filter( 'wpseo_sitemap_urlimages', 'wpseo_xmlsitemap_add_attached_images', 10, 2 );

Ouups… No. Image urls (not all, but some) do not appear to be valid (404) ??