Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-13T19:03:37","request-id":"f8a3442c-76af-4adb-a2c6-5f0d6158753b","client-request-id":"f8a3442c-76af-4adb-a2c6-5f0d6158753b"}}}"