Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-04T07:41:39","request-id":"0405974f-85e7-4ac1-b9ab-b982e130c45f","client-request-id":"0405974f-85e7-4ac1-b9ab-b982e130c45f"}}}"