Hi folks, I am migrating rancher 2.6.9 from an old rke to a new rke2 cluster. The web GUI is back. I can see the managed clusters based on rke, but a managed cluster based on rke2 cannot be reached, as it seems. Error message in the web GUI is

Failed to update fleet-default/kube003 <http://cluster.x-k8s.io/v1beta1|cluster.x-k8s.io/v1beta1>, Kind=Cluster for rke-cluster fleet-default/kube003: Internal error occurred: failed calling webhook "<http://default.cluster.cluster.x-k8s.io|default.cluster.cluster.x-k8s.io>": failed to call webhook: Post "<https://webhook-service.cattle-system.svc:443/mutate-cluster-x-k8s-io-v1beta1-cluster?timeout=10s>": service "webhook-service" not found