Connect Kubernetes to External Vault

Hello team,I need your help. I follow this procedure of integration external vault with kubernetes.

I don’t use minikube,i use kubernetes cluster with 1 master and 2 worker nodes
But when i do this
kubectl exec
$(kubectl get pod --selector=‘app=devwebapp-through-service’ --output=‘jsonpath={.items[0]}’)
– curl -s localhost:8080 ; echo

I get an error = Internal Server Error

I check the logs of the pod and see this = Exception - The secret request failed: {“errors”:[“permission denied”]}

Can you please help me with this issue?