Unable to remove Openshift Virtualization namespace with error "failed calling webhook "mutate-ns-hco.kubevirt.io":.

Issue

• On deleting namespace openshift-cnv, there is a following error:

Error from server (InternalError): Internal error occurred: failed calling webhook "mutate-ns-hco.kubevirt.io": failed to call webhook: Post "https://hco-webhook-service.openshift-cnv.svc:4343/mutate-ns-hco-kubevirt-io?timeout=10s": no endpoints available for service "hco-webhook-service""