Gitlab Grafana installation not working

Hi, I am using helm v3 with kubernetes v1.19.2 to install gitlab with grafana but its not installing grafana as a service I used following configuration

gitlab:
  gitlab-runner:
    install: false
  migrations:
    enabled: true
  nginx-ingress:
    controller:
      service:
        type: NodePort
  gitlab:
    gitaly:
      persistence:
        enabled: true
        storageClass: store
        size: 500Gi
    minio:
      persistence:
        enabled: true
        storageClass: store
  certmanager:
    install: false
  global:
    grafana:
      enabled: true
    ingress:
      configureCertmanager: false
    hosts:
      domain: internal.org
    edition: ce

when i do --dry-run i see all configuration but not service configuration that's why when i get logs for nginx-ingress after installation it fails to find grafana and /-/grafana URL results in 503

Here is dry-run output helm install gitlab-ce gitlab --dry-run | grep grafana

    generate_secret_if_needed "gitlab-grafana-initial-password" --from-literal=password=$(gen_random 'a-zA-Z0-9' 64)
# Source: gitlab/charts/gitlab/charts/gitlab/charts/gitlab-grafana/templates/datasource-configmap.yaml
  name: gitlab-ce-gitlab-grafana-datasource
    gitlab_grafana_datasource: "true"
    app: gitlab-grafana
    chart: gitlab-grafana-4.4.4
# Source: gitlab/charts/gitlab/charts/gitlab/charts/gitlab-grafana/templates/import-secret-configmap.yaml
  name: gitlab-grafana-import-secret
    app: gitlab-grafana
    chart: gitlab-grafana-4.4.4
    # Start up the full grafana service
# Source: gitlab/charts/gitlab/charts/gitlab/charts/gitlab-grafana/templates/ingress.yaml
  name: gitlab-ce-grafana
    app: gitlab-grafana
    chart: gitlab-grafana-4.4.4
              serviceName: gitlab-ce-grafana
            path: /-/grafana

nginx-ingress logs shows that gitlab-ce-grafana service not found

W1019 05:58:41.527356       7 controller.go:753] Error obtaining Endpoints for Service "default/gitlab-ce-grafana": no object matching key "default/gitlab-ce-grafana" in local store
W1019 05:58:44.861048       7 controller.go:753] Error obtaining Endpoints for Service "default/gitlab-ce-grafana": no object matching key "default/gitlab-ce-grafana" in local store

Here are all the services running:

NAME                                         TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                                   AGE
gitlab-ce-gitaly                             ClusterIP   None             <none>        8075/TCP,9236/TCP                         31m
gitlab-ce-gitlab-exporter                    ClusterIP   10.105.83.78     <none>        9168/TCP                                  31m
gitlab-ce-gitlab-shell                       ClusterIP   10.96.145.199    <none>        22/TCP                                    31m
gitlab-ce-minio-svc                          ClusterIP   10.109.94.225    <none>        9000/TCP                                  31m
gitlab-ce-nginx-ingress-controller           NodePort    10.106.143.164   <none>        80:32708/TCP,443:32308/TCP,22:30869/TCP   31m
gitlab-ce-nginx-ingress-controller-metrics   ClusterIP   10.102.54.139    <none>        9913/TCP                                  31m
gitlab-ce-nginx-ingress-controller-stats     ClusterIP   10.96.104.200    <none>        18080/TCP                                 31m
gitlab-ce-nginx-ingress-default-backend      ClusterIP   10.96.214.70     <none>        80/TCP                                    31m
gitlab-ce-postgresql                         ClusterIP   10.107.179.139   <none>        5432/TCP                                  31m
gitlab-ce-postgresql-headless                ClusterIP   None             <none>        5432/TCP                                  31m
gitlab-ce-postgresql-metrics                 ClusterIP   10.104.132.220   <none>        9187/TCP                                  31m
gitlab-ce-prometheus-server                  ClusterIP   10.100.123.238   <none>        80/TCP                                    31m
gitlab-ce-redis-headless                     ClusterIP   None             <none>        6379/TCP                                  31m
gitlab-ce-redis-master                       ClusterIP   10.102.34.15     <none>        6379/TCP                                  31m
gitlab-ce-redis-metrics                      ClusterIP   10.97.154.10     <none>        9121/TCP                                  31m
gitlab-ce-registry                           ClusterIP   10.98.243.143    <none>        5000/TCP                                  31m
gitlab-ce-webservice                         ClusterIP   10.96.166.218    <none>        8080/TCP,8181/TCP                         31m
kubernetes                                   ClusterIP   10.96.0.1        <none>        443/TCP                                   2d17h
kubernetes-dashboard                         ClusterIP   10.111.139.57    <none>        443/TCP                                   23h
metrics-server                               ClusterIP   10.104.40.116    <none>        443/TCP                                   2d16h

Can you tell me how can i make it work ?