Some of the prometheus metrics were missed in kubernetes/ingress-nginx

I followed the steps of monitoriing ingress-nginx by prometheus,however, i got less metrics compare to the snapshot in Official document. can anyone please help me? Thanks.

My Metrics, e.g nginx_ingress_controller_bytes_sent_bucket is missed in below snapshot.

snapshot in offical document,(could not add more pics)
https://kubernetes.github.io/ingress-nginx/user-guide/monitoring/