memcache.go:265] "Unhandled Error" err="couldn't get current server API group list

 If you face the following error :  E0606 13:44:07.536927  102303 memcache.go:265] "Unhandled Error" err="couldn't get current server API group list: Get \"http://localhost:8080/api?timeout=32s\": dial tcp 127.0.0.1:8080: connect: connection refused"

For this you all need to do is change the follwoing 

grep server ~/.kube/config

if the result is like follows

server: https://127.0.0.1:6443

this is the reason it cause all you need to change it to 

server: https://controlnodeIP:6443

also you need to export the following

export  KUBECONFIG=/etc/rancher/rke2/rke2.yaml

that's all