I am trying to apply a simple Pod configuration using kubectl apply -f nginx.yaml, but I’m encountering an authentication error. Here’s the content of my nginx.yaml file:

apiVersion: v1
kind: Pod
metadata:
 name: nginx
spec:
 containers:
 - name: nginx-container
 image: nginx

When I run the command, I get the following error:

error: error validating “nginx.yaml”: error validating data: failed to
download openapi: Authentication required

; if you choose to ignore these errors, turn validation
off with –validate=false

I am using kubectl to manage a Kubernetes cluster.
The nginx.yaml file is correctly formatted, as far as I can tell.