How to get the username and password for my terraform-created lightsail instances?

Now I couldn't create instance now with key pair generation code added. New code:

# Create the Lightsail instance for Singapore
resource "aws_lightsail_instance" "instance_singapore" {
  provider          = aws.singapore
  name              = var.instance_name_singapore
  availability_zone = var.instance_availability_zone_asia
  key_pair_name     = aws_lightsail_key_pair.private_key_1.id
  blueprint_id      = var.instance_blueprintid
  bundle_id         = var.instance_bundleid

  depends_on = [ aws_lightsail_key_pair.private_key_1 ]
  tags = {
    Environment = "production"
  }
}

provider "tls" {
  # The TLS provider is used to generate the key pair
}

# Generate an RSA private key
resource "tls_private_key" "example" {
  algorithm   = "RSA"
  rsa_bits    = 4096
}

# AWS Lightsail key pair resource using the generated public key
resource "aws_lightsail_key_pair" "private_key_1" {
  name       = var.key_pair_1_name
  public_key = tls_private_key.example.public_key_openssh
}

# Output the public key
output "public_key" {
  value = tls_private_key.example.public_key_openssh
}

# Optionally, you can also output the private key for further use (e.g., for SSH access)
# Note: Be cautious with handling private keys
output "private_key" {
  sensitive = true
  value     = tls_private_key.example.private_key_pem
}

It says:

`operation error Lightsail: CreateInstances, https response error StatusCode: 400, RequestID: 0eefa119-62f3-4cca-b09b-5ce625ce8dbc, NotFoundException: The

The KeyPair does not exist:

key_pair_name = aws_lightsail_key_pair.private_key_1.id

This should be referring to the keypain name as below

key_pair_name = aws_lightsail_key_pair.private_key_1.name