问用Go sdk 调用负载均衡后端健康状态接口报 [TencentCloudSDKError] ？

//请求配置文件
cpf := profile.NewClientProfile()

//生成CDB客户端
client, _ := clb.NewClient(credential, region, cpf)

//构建请求
request := clb.NewDescribeTargetHealthRequest()
request.LoadBalancerIds = common.StringPtrs([]string{balancerId})

//发送请求
response, err := client.DescribeTargetHealth(request)
if err != nil {
   return nil, err
}