Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-06-18T23:28:03","request-id":"f67957f1-db2a-4e02-9cb5-eec968ef50ef","client-request-id":"f67957f1-db2a-4e02-9cb5-eec968ef50ef"}}}"