Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-21T13:00:39","request-id":"34f77835-89dc-4ab5-93eb-2fdbc94b984a","client-request-id":"34f77835-89dc-4ab5-93eb-2fdbc94b984a"}}}"