How to pass text file containing list of thousands ip address as a variable while creating aws wafv2 ip set using terraform?

I want to create a aws wafv2 ip set using terraform.I have two text file one is blacklist.txt and another is whitelist.txt Below are the main.tf and variable.tf files

resource "aws_wafv2_ip_set" "this" {
  count = var.ip_set_count

  name               = var.ip_set_name[count.index]
  scope              = var.ip_set_scope
  ip_address_version = var.ip_address_version
  addresses          = split("\n", file(var.addresses[count.index]))
  
  tags = var.ip_set_tags
}

variable "ip_set_count" {
  type = number
  default = 2
}

variable "ip_set_name" {
  type = list(string)
  default = ["IPSetRule01","IPSetRule02"]
}

variable "ip_set_scope" {
  type = string
  default = "REGIONAL"
}

variable "ip_address_version" {
  type = string
  default = "IPV4"
}

variable "addresses" {
  type        = list(string)
  description = "The Filename to import IP sets. Specify one or more IP addresses  contains by CIDR notation."
  default     = ["blacklist.txt", "whitelist.txt"]
}

Blacklist.txt containing below ips.

1.1.1.1/32
2.2.0.0/16

whitelist.txt containing below ips.

3.3.3.3/32
4.0.4.0/16

Now while run terraform apply it is give bellow error code.

Error creating WAFv2 IPSet: ValidationException: 1 validation error detected: Value, 10.1.11.0/16]' at 'addresses' failed to satisfy constraint: Member must satisfy constraint: [Member must have length less than or equal to 50, Member must have length greater than or equal to 1, Member must satisfy regular expression pattern: .*\S.*]
│       status code: 400, request id: ea4a5f1b-d482-463d-aa48-39ab2ad3af78
│
│   with aws_wafv2_ip_set.this[0],
│   on main.tf line 5, in resource "aws_wafv2_ip_set" "this":
│    5: resource "aws_wafv2_ip_set" "this" {

Would appreciate any lead to get rid of this error.