I'm randomly getting this error today for kubectl get pods:

Error from server (Forbidden): pods is forbidden: User "client" cannot list pods in the namespace "default": Unknown user "client"

The only significant change that occurred is I started minikube earlier.

The error message occurs after I run:

gcloud container clusters get-credentials wordpress --zone europe-west1-b --project example

What is the cause of this error? What does this 'client' user refer to - is it a service account?