Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-21T09:02:19","request-id":"55b6f19f-0702-4e58-acbf-5ed837302e9f","client-request-id":"55b6f19f-0702-4e58-acbf-5ed837302e9f"}}}"