Looks like you are hitting this bug
https://github.com/kubernetes/kubernetes/issues/82443
Juju currently still uses "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1" Seems in k8s 1.16 v1 became available.
The above k8s bug does have a work around on how to structure the CRD until Juju can be updated.
Looks like you are hitting this bug
https:/ /github. com/kubernetes/ kubernetes/ issues/ 82443
Juju currently still uses "k8s.io/ apiextensions- apiserver/ pkg/apis/ apiextensions/ v1beta1"
Seems in k8s 1.16 v1 became available.
The above k8s bug does have a work around on how to structure the CRD until Juju can be updated.