iam_deploy input parameter not working as expected

[rohanagrawal-amex]

• I've searched for similar issues and didn't find any solution

💻 Environment

• Platform: macOS
• OS: macOS 11.5.1
• Version(s):

💯 Expected behavior

I dont want to create the iam role through this module so was expecting that on passing iam_deploy = false, it wouldnt deploy the iam role. I am using 0.14.0 version of the module.

🐞 Actual behavior

The documentation here: https://registry.terraform.io/modules/terraform-module/velero/kubernetes/latest mentions that iam_deploy isnt a required parameter and its default value is true. Since i didnt want to deploy the iam role through this module, i passed in iam_deploy = false. However on running terraform plan i am encountering the below error

on .terraform/modules/velero/main.tf line 45, in resource "helm_release" "this":
│ 45: EKS_ROLE_ARN = aws_iam_role.this[0].arn
│ ├────────────────
│ │ aws_iam_role.this is empty tuple

Bug description

Full code that generated the error

module "velero" {
  source                      = "terraform-module/velero/kubernetes"
  version                     = "0.14.0"
  namespace_deploy            = true
  app_deploy                  = true
  cluster_name                = local.cluster_name
  iam_deploy                  = "false"
  openid_connect_provider_uri = "xxx"
  bucket                      = "xxx"
  values = [<<EOF
  "pertinent values" 
  EOF
  ]
}

Full error message

 Error: Invalid index
│ 
│   on .terraform/modules/velero/main.tf line 45, in resource "helm_release" "this":
│   45:         EKS_ROLE_ARN = aws_iam_role.this[0].arn
│     ├────────────────
│     │ aws_iam_role.this is empty tuple
│ 
│ The given key does not identify an element in this collection value: the
│ collection has no elements.

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