Hi @souravmishra,
Please share some screenshots of the issue if possible. Also, if you’re using the KodeKloud playground, check this link for guidance: amazon-elastic-kubernetes-service-course/docs/playground.md at main · kodekloudhub/amazon-elastic-kubernetes-service-course · GitHub
Bro check out config of api server theere would be dns name like k8s.local it is dns of cluster so check it you are typing wrong dns addresss or check dns ip and core dns ip