java sdk调用接口，阿里云OpenAPI看起来返回数据正常，但是解析失败了，什么原因？

com.aliyun.bssopenapi20171214.Client client = new com.aliyun.bssopenapi20171214.Client(config);

        com.aliyun.bssopenapi20171214.models.QueryBillOverviewRequest queryBillOverviewRequest = new com.aliyun.bssopenapi20171214.models.QueryBillOverviewRequest()
                .setBillingCycle("2024-03-20");
        com.aliyun.teautil.models.RuntimeOptions runtime = new com.aliyun.teautil.models.RuntimeOptions();
        client.queryBillOverviewWithOptions(queryBillOverviewRequest, runtime);

Error: convert to JSON, response is:
{"Message":"Successful!","RequestId":"2AA8F59F-8E48-5B38-A677-4DF9D551C992","Data":{"BillingCycle":"2024-03-20"

java sdk调用接口，阿里云OpenAPI看起来返回数据正常，但是解析失败了，什么原因？