facing errors while trying ingress controller YT video

[najamsk]

Hello, I am following this youtube video Kubernetes Ingress Explained for Beginners One step involves running command kubectl apply -f ingress/controller/traefik this throws following errors

configmap/traefik-config unchanged
serviceaccount/traefik-ingress-controller unchanged
service/traefik-ingress-service unchanged
service/traefik-web-ui unchanged
resource mapping not found for name: "traefik-ingress-controller" namespace: "kube-system" from "ingress/controller/traefik/traefik-deployment.yaml": no matches for kind "Deployment" in version "extensions/v1beta1"
ensure CRDs are installed first
resource mapping not found for name: "traefik-ingress-controller" namespace: "" from "ingress/controller/traefik/traefik-rbac.yaml": no matches for kind "ClusterRole" in version "rbac.authorization.k8s.io/v1beta1"
ensure CRDs are installed first
resource mapping not found for name: "traefik-ingress-controller" namespace: "" from "ingress/controller/traefik/traefik-rbac.yaml": no matches for kind "ClusterRoleBinding" in version "rbac.authorization.k8s.io/v1beta1"
ensure CRDs are installed first
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