Namespace not created as part of the kubeserial.yaml

[noxin1]

kubectl create -f kubeserial.yaml

clusterrole.rbac.authorization.k8s.io/kubeserial created
clusterrolebinding.rbac.authorization.k8s.io/kubeserial created
customresourcedefinition.apiextensions.k8s.io/kubeserials.app.kubeserial.com created
Error from server (NotFound): error when creating "kubeserial.yaml": namespaces "kubeserial" not found
Error from server (NotFound): error when creating "kubeserial.yaml": namespaces "kubeserial" not found