A pod named ckad-nginx-pod-aom is deployed and exposed with a service ckad-nginx-service-aom, but it seems the service is not configured properly and is not selecting the correct pod.
Make the required changes to service and ensure the endpoint is configured for service.
It looks like there is no svc referred to in the instructions.
student-node ~ ➜ kubectl config use-context cluster1
Switched to context "cluster1".
student-node ~ ➜ kubectl describe svc ckad-nginx-service-aom
Error from server (NotFound): services "ckad-nginx-service-aom" not found