Airgapped installation Rancher 2.6.5

We have managed to get trough airgapped installation but stopped at this point :

[rke@xyz rancher-stable]$ kubectl -n cattle-system apply -R -f ./rancher
clusterrolebinding.rbac.authorization.k8s.io/rancher configured
deployment.apps/rancher configured
service/rancher configured
serviceaccount/rancher configured
unable to recognize “rancher/templates/ingress.yaml”: no matches for kind “Ingress” in version “networking.k8s.io/v1
unable to recognize “rancher/templates/issuer-rancher.yaml”: no matches for kind “Issuer” in version “certmanager.k8s.io/v1alpha1

Tried creating template with v.2.6.5 and latest 2.6.6, we have got same issue.
Also we have redeployed cert-manager, which has deployed sucessfully.

Any clues what to do?

Might you be using an earlier than supported version of Kubernetes? I’m not sure when Ingress went from beta to v1, but that looks like what your error’s saying anyway.