The request client is not a secure context and the resource is in more-private address space local.
Recientemente (al momento de escribir este post) Chrome se ha actualizado para ser más seguro, y en ocasiones nos va a lanzar el error que dice: Access to fetch at ‘dominio’ from origin ‘otro_dominio’ has been blocked by CORS policy: The request client is not a secure context and the resource is in more-private address […]