while installing ingress giving connection refused

Question

I installed ingress addon using minikube addons enable ingress on windows machine with virtualbox as driver (--driver=virtualbox).

Minikube Version

PS C:\Users\wv3cxq> minikube version
minikube version: v1.23.0
commit: 5931455374810b1bbeb222a9713ae2c756daee10

but when I try to install ingress, I am getting following error.

Error from server (InternalError): error when creating ".\\ingress.yaml": 
Internal error occurred: failed calling webhook "validate.nginx.ingress.kubernetes.io": 
Post "https://ingress-nginx-controller-admission.ingress-nginx.svc:443/networking/v1/ingresses?timeout=10s": 
dial tcp 10.101.148.37:443: connect: connection refused

Ingress file

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: hello-app-ingress
  labels:
    name: hello-app-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - pathType: Prefix
        path: "/"
        backend:
          service:
            name: hello-app-service
            port: 
              number: 8080