Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-24T16:50:43","request-id":"cab77320-7832-42bf-a92e-c711ac6ebb39","client-request-id":"cab77320-7832-42bf-a92e-c711ac6ebb39"}}}"