Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-01-29T04:57:10","request-id":"e20f24bb-8bed-4da1-b54f-f8eec473bd9b","client-request-id":"e20f24bb-8bed-4da1-b54f-f8eec473bd9b"}}}"