nginx-ingress-controller error. it gives error while initializing connection to kubernetes apiserver. Is there some issue with the cluster, not able to understand this issue. I want to expose my services outside cluster. below is the docker logs with the error and my nginx-ingress-controller.yml

docker log

Creating API client for https://10.96.0.1:443
F1128 06:30:25.376076       7 launch.go:330] Error while initializing connection to 
Kubernetes apiserver. This most likely means that the cluster is misconfigured (e.g., it has 
invalid apiserver certificates or service accounts configuration). Reason: Get  
https://10.96.0.1:443/version: dial tcp 10.96.0.1:443: i/o timeout

nginx-controller.yml

apiVersion: v1
kind: Namespace
metadata:
  name: ingress-nginx


--- 
kind: Service
apiVersion: v1
metadata:
  name: ingress-nginx
  namespace: ingress-nginx
labels:
  app: ingress-nginx
spec:
  externalTrafficPolicy: Local
type: LoadBalancer
selector:
app: ingress-nginx
ports:
- name: http
port: 80
targetPort: http
- name: https
port: 443
targetPort: https


---

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: nginx-ingress-controller
namespace: default
spec:
replicas: 1
#  selector:
#    matchLabels:
#      app: ingress-nginx
template:
metadata:
  labels:
    app: ingress-nginx
  annotations:
    prometheus.io/port: '10254'
    prometheus.io/scrape: 'true'
spec:
  containers:
    - name: nginx-ingress-controller
      image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.9.0-beta.17
          args:
        - /nginx-ingress-controller
        - --default-backend-service=$(POD_NAMESPACE)/nginx-default-backend-external

        - --logtostderr
        - --configmap=$(POD_NAMESPACE)/nginx-ingress-config
        - --default-ssl-certificate=$(POD_NAMESPACE)/default-tls
      env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
      ports:
        - name: http
          containerPort: 80
        - name: https
         containerPort: 443

what could be the reason