Terraform error: List of string required

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│ Error: Invalid value for module argument
│
│   on main.tf line 8, in module "yourModuleName":
│    8:   subnet_ids = var.subnet_id
│
│ The given value is not suitable for child module variable "subnet_ids" defined at
│ ../path/to/your/terraformodule.tf :79,1-22: list of string required.
  • Solution: If your element is from type list make user provide values using proper format: [value1, value2] or [value1] if your list of strings only have one value.
  • Example: variable "vpc_security_group_ids" { default = ["sg-9038b461666bf999a"] }

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