Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-15T05:58:46","request-id":"f129133c-00a6-4d8a-be4b-836edc49cd2c","client-request-id":"f129133c-00a6-4d8a-be4b-836edc49cd2c"}}}"