Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-03T14:54:13","request-id":"0726e076-eef1-4848-b0c4-18b73357e804","client-request-id":"0726e076-eef1-4848-b0c4-18b73357e804"}}}"