I have created K8s cluster on my AWS account. But the kubectl commands don't work. I'm getting the following error: kubectl get nodes Unable to connect to the server: EOF

Please note that the "get pods,get svc and ns" are also showing the above error.

kops version Version 1.9.2 (git-cb54c6a52) kubectl version v1.9.4

``` kubectl cluster-info

Kubernetes master is running at https://api-testkops-k8s-loca-uaofd1-10542275541138.us-east-1.elb.amazonaws.com

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'. Unable to connect to the server: EOF ```

How can I resolve the issue? Please help.