Error: Need at least 1 healthy instances in ELB, have 0

Cannot deploy standard install on us-gov-west-1 due to asg errors. Using the example in the readme.md, I implemented a simple main.tf with the following:

module "rke2" {
  source  = "git::https://github.com/rancherfederal/rke2-aws-tf.git"
  cluster_name = "k8s-dev"
  vpc_id  = "vpc-0a6db126a86f58b4e"
  subnets = ["subnet-0864955a47e54fabe"]
  ami     = "ami-0bf5f4d6bd38220c3"
}

# Provision Auto Scaling Group of agents to auto-join cluster
module "rke2_agents" {
  source  = "git::https://github.com/rancherfederal/rke2-aws-tf.git//modules/agent-nodepool"
  name = "k8s-dev-agent"
  vpc_id  = "vpc-0a6db126a86f58b4e"
  subnets = ["subnet-0864955a47e54fabe"]
  ami     = "ami-0bf5f4d6bd38220c3"
  
  # Required input sourced from parent rke2 module, contains configuration that agents use to join existing cluster
  cluster_data = module.rke2.cluster_data
}

After a while, this is where everything fails:

...

module.rke2.module.servers.aws_autoscaling_group.this: Still creating... [9m40s elapsed]
module.rke2.module.servers.aws_autoscaling_group.this: Still creating... [9m50s elapsed]
module.rke2.module.servers.aws_autoscaling_group.this: Still creating... [10m0s elapsed]

Error: "k8s-dev-cyl-server-rke2-nodepool": Waiting up to 10m0s: Need at least 1 healthy instances in ELB, have 0. Most recent activity: {
  ActivityId: "e315f269-32cf-5417-2a04-4315785a02c5",
  AutoScalingGroupARN: "arn:aws-us-gov:autoscaling:us-gov-west-1:881927530031:autoScalingGroup:1ecefb03-9d1e-4127-ae88-0fcc04430d97:autoScalingGroupName/k8s-dev-cyl-server-rke2-nodepool",
  AutoScalingGroupName: "k8s-dev-cyl-server-rke2-nodepool",
  Cause: "At 2021-10-19T20:44:44Z a user request created an AutoScalingGroup changing the desired capacity from 0 to 1.  At 2021-10-19T20:44:48Z an instance was started in response to a difference between desired and actual capacity, increasing the capacity from 0 to 1.",
  Description: "Launching a new EC2 instance: i-0502ee0202e4984cd",
  Details: "{\"Subnet ID\":\"subnet-0864955a47e54fabe\",\"Availability Zone\":\"us-gov-west-1a\"}",
  EndTime: 2021-10-19 20:45:07 +0000 UTC,
  Progress: 100,
  StartTime: 2021-10-19 20:44:50.517 +0000 UTC,
  StatusCode: "Successful"
}

  on .terraform/modules/rke2/modules/nodepool/main.tf line 57, in resource "aws_autoscaling_group" "this":
  57: resource "aws_autoscaling_group" "this" {