Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-08T00:22:56","request-id":"5549568e-ffe0-4293-8809-d4206f417172","client-request-id":"5549568e-ffe0-4293-8809-d4206f417172"}}}"