I am running the command:

kubectl describe -A pvc | grep -E "^Name:.*$|^Namespace:.*$|^Mounted By:.*$" | grep -B 2 "<none>" | grep -E "^Name:.*$|^Namespace:.*$" | cut -f2 -d: | paste -d " " - - | xargs -n2 bash -c 'kubectl -n ${1} delete pvc ${0}'

and when I run it.. it gives me a continuous errors of:

constructing many client instances from the same exec auth config can cause performance problems during cert rotation and can exhaust available network connections; clients constructed calling "heptio-authenticator-aws"
constructing many client instances from the same exec auth config can cause performance problems during cert rotation and can exhaust available network connections; clients constructed calling "heptio-authenticator-aws"
constructing many client instances from the same exec auth config can cause performance problems during cert rotation and can exhaust available network connections; clients constructed calling "heptio-authenticator-aws"
constructing many client instances from the same exec auth config can cause performance problems during cert rotation and can exhaust available network connections; clients constructed calling "heptio-authenticator-aws"
constructing many client instances from the same exec auth config can cause performance problems during cert rotation and can exhaust available network connections; clients constructed calling "heptio-authenticator-aws"
constructing many client instances from the same exec auth config can cause performance problems during cert rotation and can exhaust available network connections; clients constructed calling "heptio-authenticator-aws"
constructing many client instances from the same exec auth config can cause performance problems during cert rotation and can exhaust available network connections; clients constructed calling "heptio-authenticator-aws"

• I am using it to delete my unmounted kubernetes pvc's.. how do I fix the error?
• It just outputs this error and no pvc is deleted.