Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-08T02:16:31","request-id":"c3c6007f-83f4-4de6-a98b-c522f34ca09b","client-request-id":"c3c6007f-83f4-4de6-a98b-c522f34ca09b"}}}"