Decrypting Windows Password in terraform

I'm trying to set up a Terraform script to deploy a windows server. When running terraform apply I get an error message referencing below

Error: Invalid reference

  on main.tf line 44, in resource "aws_instance""server":
  44:       password = "${rsadecrypt(aws_instance.server[0].password_data, file(KEY_PATH))}"

A reference to a resource type must be followed by at least one attribute
access, specifying the resource name.

AFAIK the resource is "aws_instance", the name is "server[0]" while the attribute is the "password_data". I know I'm missing something but don't know what. any assistance would be appreciated.

The full resource module is below in case there is something I'm missing contained in there. Thanks

resource "aws_instance""server" {
  ami                      = var.AMIS[var.AWS_REGION]
  instance_type            = var.AWS_INSTANCE
  vpc_security_group_ids  = [module.networking.security_group_id_out]
  subnet_id               = module.networking.subnet_id_out

  ## Use this count key to determine how many servers you want to create.
  count                   = 1
  key_name                = var.KEY_NAME
  tags = {
    # Name                  = "Server-Cloud"
    Name = "Server-${count.index}"
  }

  root_block_device {
    volume_size           = var.VOLUME_SIZE
    volume_type           = var.VOLUME_TYPE
    delete_on_termination = true
  }

  get_password_data = true

  provisioner "remote-exec" {
    connection {
      host = coalesce(self.public_ip, self.private_ip)
      type = "winrm"

      ## Need to provide your own .pem key that can be created in AWS or on your machine for each provisioned EC2.
      password = ${rsadecrypt(aws_instance.server[0].password_data, file(KEY_PATH))}
    }
    inline = [
      "powershell -ExecutionPolicy Unrestricted C:\\Users\\Administrator\\Desktop\\installserver.ps1 -Schedule",
    ]
  }

  provisioner "local-exec" {
    command = "echo ${self.public_ip} >> ../public_ips.txt"
  }
}