Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-19T17:06:14","request-id":"b18c7da3-ce04-437d-8fab-1f6b2f14cde3","client-request-id":"b18c7da3-ce04-437d-8fab-1f6b2f14cde3"}}}"