Having trouble upgrading via helm

[icsy7867]

Apoligies, I am a bit of a novice who runs my homelab things using k3s and Rancher. I use your provisioner and it is working well. I am just giving all my things some TLS and getting them up to date.

but i cannot for the life of me find an easy way to upgrade. I dont want to delete the chart. I assumed I could just do something like this:

helm repo update
helm upgrade --install --reuse-values nfs-subdir-external-provisioner nfs-subdir-external-provisioner/nfs-subdir-external-provisioner --kubeconfig ~/.kube/config -n default

And this gives me an error: Error: UPGRADE FAILED: template: nfs-subdir-external-provisioner/templates/poddisruptionbudget.yaml:1:14: executing "nfs-subdir-external-provisioner/templates/poddisruptionbudget.yaml" at <.Values.podDisruptionBudget.enabled>: nil pointer evaluating interface {}.enabled

Further info:

helm list
nfs-subdir-external-provisioner	default  	1       	2022-11-27 02:17:25.043143669 +0000 UTC	deployed	nfs-subdir-external-provisioner-4.0.17	4.0.2

helm repo list
nfs-subdir-external-provisioner	https://kubernetes-sigs.github.io/nfs-subdir-external-provisioner/

Apoligies if this is something stupid, but I appreciate the help!