CPU and memory usage of pods always zero

I’m running a simple cluster with 4 replicas of the “hello-node” container and I’m trying to get the resources usage, but these statistics remain at zero value. Even when I stress the service with high level of HTTP requests, they don’t change… what could be the problem?
How can I get these values properly?

Maybe this can help:

Cluster information:

Kubernetes version: minikube version: v1.32.0 (Kubernetes v1.23.17 on Docker 24.0.7)
Cloud being used: bare-metal
Installation method: binary download
Host OS: Linux 6.5.0-14-generic (Ubuntu 23.10)
CNI and version: podman 0.4.0 (ls /etc/cni/net.d)
CRI and version: docker://24.0.7