Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-05T13:18:06","request-id":"4992ff3d-4630-488e-8f10-e5d6d574bcdc","client-request-id":"4992ff3d-4630-488e-8f10-e5d6d574bcdc"}}}"