[kubelet] Error log invalid bearer token, square/go-jose: error in cryptographic primitive

Cluster information:

Kubernetes version: v1.26.6
Cloud being used: bare-metal
Installation method: kubeadm
Host OS: Ubuntu 22.04
CNI and version: docker.io/calico/cni:v3.26.1
CRI and version: crio, version: 1.26.4

Hi everyone!

I am deploying an om-prem k8s cluster.
The bootstrap phase is done and the master and worker nodes are in the READY state.
But, in the kubelet log from the worker node, it appears an error log:

I have no idea about the flow causing this error.
I hope I can find some clues here in the forum.
Thanks for your time reading my issue!

I finally understand the problem according to this GitHub issue here: k8s v1.23.6 installed in binary kubelet "Unable to authenticate the request due to an error" err="[invalid bearer token, square/go-jose: error in cryptographic primitive]" · Issue #112942 · kubernetes/kubernetes · GitHub
The kubelet process is calling to both the old and new k8s clusters. This error log indicated that the calling flow to the old k8s cluster is failing.