Password error

[gamename]

Hi,
I really like your module. But I'm getting this error when I try to use it:

Error: ValidationException: 1 validation error detected: Value at 'password' failed to satisfy constraint: Member must satisfy regular expression pattern: (?=^.{8,64}$)((?=.*\d)(?=.*[A-Z])(?=.*[a-z])|(?=.*\d)(?=.*[^A-Za-z0-9\s])(?=.*[a-z])|(?=.*[^A-Za-z0-9\s])(?=.*[A-Z])(?=.*[a-z])|(?=.*\d)(?=.*[A-Z])(?=.*[^A-Za-z0-9\s]))^.*
        status code: 400, request id: c010f645-9f5e-11e9-a23d-15e2e3193d8d

  on .terraform/modules/ad/neillturner-terraform-aws-simplead-6a17678/ad.tf line 1, in resource "aws_directory_service_directory" "my_simplead":
   1: resource "aws_directory_service_directory" "my_simplead" {

Here is the calling code:

module "ad" {
  source         = "neillturner/simplead/aws"
  version        = "0.2.0"
  domain_name    = "rtt.training.aws"
  short_name     = "rtt"
  size           = "Small"
  admin_password = "secret"
  vpc_id         = module.vpc.vpc_id
  subnet_ids     = module.vpc.private_subnets
  computer_ou    = "RTT"
}