kiali: Why my istio configuration below gets warning and error?

Hi Guys, I have problem on Istio Config menu found at Kiali web. My Kiali version is:

kiali-ui 0.11.0 (f0a8d441e763e62d7a39682eb60bb9b2c12d4609)
kiali v0.11.0 (bff6219618030a012c2ead4c361c6db97bbb5433)
Components
Istio 1.0.0 

Subset is not found on the host

But in fact, i have 2 deployment stable and canary both has correct track label on it.

$ kubectl get deploy -n data-devops  -l track=stable
NAME                  DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
corn-app-stable       1         1         1            1           47m

$ kubectl get deploy -n data-devops  -l track=canary
NAME              DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
corn-app-canary   1         1         1            1           21m

$ kubectl get svc -n data-devops corn-app-global -o yaml
apiVersion: v1
kind: Service
metadata:
  creationTimestamp: 2019-01-23T08:25:01Z
  name: corn-app-global
  namespace: data-devops
  resourceVersion: "148223782"
  selfLink: /api/v1/namespaces/data-devops/services/corn-app-global
  uid: 60af40cc-1ee8-11e9-af67-42010a9401fd
spec:
  clusterIP: 10.32.77.78
  ports:
  - name: http-corn-app
    port: 3000
    protocol: TCP
    targetPort: 3000
  selector:
    app: corn-app
  sessionAffinity: None
  type: ClusterIP
status:
  loadBalancer: {}

And as much as I can tell, I can access both deployment just fine through Istio Ingress Gateway (using traffic splitting for example). So I am not sure why the Kiali indicates that error above.

More than 1 gateways with the same host port combinaton

i’ve checked it multiple times, but the corn-app-stg.tvlk-data.com only listed on corn-app-gateway gateway.

$ kubectl get gateway --all-namespaces -o yaml | grep -i corn-app-stg.tvlk-data.com -B10

    name: corn-app-gateway
    namespace: data-devops
    resourceVersion: "148223785"
    selfLink: /apis/networking.istio.io/v1alpha3/namespaces/data-devops/gateways/corn-app-gateway
    uid: 60b1529c-1ee8-11e9-af67-42010a9401fd
  spec:
    selector:
      istio: ingressgateway
    servers:
    - hosts:
      - corn-app-stg.tvlk-data.com
--
      port:
        name: http-corn-app
        number: 80
        protocol: HTTP
      tls:
        httpsRedirect: true
    - hosts:
      - corn-app-stg.tvlk-data.com

So, I believe there is an error on Kiali on doing istio config validation.

Anyway, the public url can’t be resolved in public, since I hardcoded that in my /etc/hosts for testing.