Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-03-26T07:38:45","request-id":"00454dca-e09a-41e5-8ef1-e528dd38bba5","client-request-id":"00454dca-e09a-41e5-8ef1-e528dd38bba5"}}}"