Unable to display Prometheus Dashboard

Question

I have an app deployed on AKS cluster. Then I setup ingress-nginx controller.

After that I setup ingress manifest to expose this app using below code:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-ngnix-sampleapp-ic
  annotations:
    kubernetes.io/ingress.class: nginx
spec:
  rules:
    - http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: ngnix-cluster-ip
                port:
                  number: 80

This works fine and I am able to access the app from my browser locally.

Then I installed Prometheus using below command:

helm install prometheus prometheus-community/prometheus

This also works fine and I can see prometheus installed on the cluster.

After that I expose Prometheus using ingress manifest as below:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-nginx-prometheus-ic
  namespace: prometheus
  annotations:
    kubernetes.io/ingress.class: nginx
spec:
  rules:
    - http:
        paths:
          - path: /graph
            pathType: Prefix
            backend:
              service:
                name: prometheus-kube-prometheus-prometheus
                port:
                  number: 9090

After that when I try to access the Prometheus from my browser, I only see a blank page. I have enabled javascript on the browser but nothing changes. I see page as below:

The title of page shows that its routing fine, but why is the page blank?

Any help is greatly appreciated.