[Bug]: Error when setting disable_hetzner_csi = true

[janfrederik]

Description

When seting disable_hetzner_csi = true in kube.tf, I get error

module.k8s_cluster.module.kube-hetzner.null_resource.kustomization: Provisioning with 'file'...
╷
│ Error: Error in function call
│
│   on .terraform/modules/k8s_cluster.kube-hetzner/init.tf line 261, in resource "null_resource" "kustomization":
│  261:     content = templatefile(
│  262:       "${path.module}/templates/hcloud-csi.yaml.tpl",
│  263:       {
│  264:         version = local.csi_version
│  265:         values  = indent(4, trimspace(local.hetzner_csi_values))
│  266:     })
│     ├────────────────
│     │ while calling templatefile(path, vars)
│     │ local.csi_version is null
│     │ local.hetzner_csi_values is ""
│     │ path.module is ".terraform/modules/k8s_cluster.kube-hetzner"
│
│ Call to function "templatefile" failed: .terraform/modules/k8s_cluster.kube-hetzner/templates/hcloud-csi.yaml.tpl:10,15-22: Invalid template interpolation value; The expression result is null. Cannot
│ include a null value in a string template..

Kube.tf file

module "kube-hetzner" {
  providers = {
    hcloud = hcloud
  }
  hcloud_token = var.hcloud_token
  source = "kube-hetzner/kube-hetzner/hcloud"

  ssh_public_key = file("~/.ssh/id_ed25519.pub")
  ssh_private_key = file("~/.ssh/id_ed25519")

  control_plane_nodepools = [
    {
      name        = "control-plane-fsn1",
      server_type = "cax11",
      location    = "fsn1",
      labels      = [],
      taints      = [],
      count       = 1
    },
  ]

  agent_nodepools = [
    {
      name        = "agent-small",
      server_type = "cax11",
      location    = "fsn1",
      labels      = [],
      taints      = [],
      count       = 1
    },
  ]

  disable_hetzner_csi = true

  enable_klipper_metal_lb = true

  system_upgrade_use_drain = false
  automatically_upgrade_os = false
}

provider "hcloud" {
  token = var.hcloud_token
}

terraform {
  required_version = ">= 1.5.0"
  required_providers {
    hcloud = {
      source  = "hetznercloud/hcloud"
      version = ">= 1.43.0"
    }
  }
}

output "kubeconfig" {
  value     = module.kube-hetzner.kubeconfig
  sensitive = true
}

variable "hcloud_token" {
  sensitive = true
}

Screenshots

No response

Platform

linux