Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-30T18:11:43","request-id":"e158e4d6-a8a9-426e-a65e-f32aa8c331c4","client-request-id":"e158e4d6-a8a9-426e-a65e-f32aa8c331c4"}}}"