I launched an EKS cluster using terraform module

My template looks something like this:

module "eks" {
source          = "terraform-aws-modules/eks/aws"
version         = "17.20.0"
cluster_name    = "${var.cluster_name}"
cluster_version = var.cluster_version
subnets         = ["${var.public_subnet_1}", 
"${var.public_subnet_2}","${var.public_subnet_3}"]
vpc_id          = var.vpc_id
cluster_security_group_id = "${var.master_sg_id}"
worker_security_group_id =  "${var.master_sg_id}"
workers_additional_policies =[aws_iam_policy.siera_alb_ingress_controller_policy.arn]
workers_role_name = "${var.cluster_name}-${var.environment}-${var.aws_region}-worker-role"
map_roles = [
  {
  rolearn   = "arn:aws:iam::${var.account_no}:role/${var.cluster_name}-${var.environment}-${var.aws_region}-worker-role"
  username  = "system:node:{{EC2PrivateDNSName}}"
  groups    = ["system:bootstrappers","system:nodes"]
  },
  {
  rolearn   = "arn:aws:sts::${var.account_no}:assumed-role/${var.assumed_role_1}"
  username  = "admin"
  groups    = ["system:masters","system:nodes","system:bootstrappers"]
  },
  {
  rolearn  = "arn:aws:sts::${var.account_no}:assumed-role/${var.assumed_role_2}"
  username  = "admin"
  groups    = ["system:masters","system:nodes","system:bootstrappers"]
  }
]
  tags = {
    Purpose = "${var.project}"
    Environment = "${var.environment}"
  }

worker_groups_launch_template = [
{
  name                  = "${var.cluster_name}-lt"
  key_name              = "${var.node_key}"
  additional_userdata   = <<EOT
                          "echo dummy" 
                          EOT
  instance_type         = "${var.node_size}"
  asg_min_size          = 3
  asg_desired_capacity  = 3
  asg_max_size          = 5
  autoscaling_enabled   = true
  asg_force_delete      = true
  public_ip             = true
  enable_monitoring     = false
  root_volume_size      = 80
  suspended_processes   = ["AZRebalance"]
  tags = [
    {
      "key"                 = "k8s.io/cluster-autoscaler/enabled"
      "propagate_at_launch" = "false"
      "value"               = "true"
    },
    {
      "key"                 = "k8s.io/cluster-autoscaler/${var.cluster_name}"
      "propagate_at_launch" = "false"
      "value"               = "true"
    }
  ]
}
] 
manage_aws_auth = false 
}

As you can see I'm trying to add aws-auth configmap using map_roles.

After launching the cluster when I run kubectl describe configmap -n kube-system aws-auth

It gives this error: Error from server (NotFound): configmaps "aws-auth" not found

What am I missing? Please help