Hi I recently upgraded our non-prod rancher to 2.6.6 and when I try to upgrade the k8s from 1.19.4 to 1.23.6, I run into the following error and had to restore to my snapshot The IngressClass "nginx" is invalid: spec.controller: Invalid value: "k8s.io/ingress-nginx": field is immutable any idea what I am missing? I use rke