Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-18T08:22:13","request-id":"6c54bc91-37c3-47bf-9981-e51b1cf0d59d","client-request-id":"6c54bc91-37c3-47bf-9981-e51b1cf0d59d"}}}"