Metrics endpoint

Hi,
I am trying to get the results for metric endpoint. But I am not getting empty results.
Tigergraph version: 3.9.0

curl -X GET -H "Authorization: Bearer nbgdfaao7chp83sceqv40bvg0iqqsatkti" "http://140.19.149.106:9167/metrics"
An error has occurred while serving metrics:

24 error(s) occurred:
* collected metric "tigergraph_qps" { label:<name:"endpoint" value:"POST /restppkafkaloader/{graph_name}" > label:<name:"host_id" value:"" > label:<name:"service_name" value:"RESTPP" > gauge:<value:0.016656672582030296 > } was collected before with the same name and label values
* collected metric "tigergraph_endpoint_timeout" { label:<name:"endpoint" value:"POST /restppkafkaloader/{graph_name}" > label:<name:"host_id" value:"" > label:<name:"service_name" value:"RESTPP" > gauge:<value:0 > } was collected before with the same name and label values

and empty result when tired as below
curl -X POST -k http://140.19.149.106:9167/metrics/get/cpu-memory
{}