InvalidParameterValue Error using the "amazon-ebs builder" #7981

packer.json

{
  "variables": {
    "ami_name": "",
    "build_id": "",
    "aws_region": "us-east-1",
    "copy_aws_region": "us-east-2",
    "ec2_instance_type": "",
    "instance_profile": "",
    "encrypt": "",
    "kms_cmk": "",
    "app_name": "base",
    "source_ami": "",
    "ssh_keypair_name": "",
    "ec2_key_file": "",
    "subnet_id": "",
    "availability_zone": "",
    "vpc_id": ""
  },
  "builders": [{
    "type": "amazon-ebs",
    "availability_zone": "{{user `availability_zone`}}",
    "encrypt_boot": "{{user `encrypt`}}",
    "kms_key_id": "{{user `kms_cmk`}}",
    "region": "{{user `aws_region`}}",
    "source_ami": "{{user `source_ami`}}",
    "instance_type": "{{user `ec2_instance_type`}}",
    "spot_price": "auto",
    "spot_price_auto_product": "Linux/UNIX (Amazon VPC)",
    "ssh_username": "ec2-user",
    "ssh_keypair_name" : "{{user `ssh_keypair_name`}}",
    "ssh_private_key_file" : "{{user `ec2_key_file`}}",
    "ami_name": "{{user `ami_name`}}",
    "iam_instance_profile": "MyPackerBuildProfile",
    "disable_stop_instance": "{{user `disable_instance`}}",
    "tags": {
      "Name": "packer-{{user `app_name`}}-{{user `env_name`}}",
      "Project": "packer",
      "Environment": "{{user `env_name`}}",
      "BuildId": "{{user `build_id`}}"
    },
    "spot_tags": {
      "Name": "packer-{{user `app_name`}}-{{user `env_name`}}",
      "Encrypted": "{{user `encrypt`}}",
      "ParentAmi": "{{user `source_ami`}}",
      "Application": "{{user `app_name`}}",
      "Environment": "{{user `env_name`}}",
      "BuildId": "{{user `build_id`}}"
    },
    "run_tags": {
      "Name": "packer-{{user `app_name`}}-{{user `env_name`}}",
      "Project": "packer",
      "Environment": "{{user `env_name`}}",
      "BuildId": "{{user `build_id`}}"
    },
    "run_volume_tags": {
      "Name": "packer-{{user `app_name`}}-{{user `env_name`}}",
      "Project": "packer",
      "Environment": "{{user `env_name`}}",
      "BuildId": "{{user `build_id`}}"
    },
    "subnet_id": "{{user `subnet_id`}}",
    "vpc_id": "{{user `vpc_id`}}"
  }],
  "provisioners": [
    {
      "type": "shell",
      "inline":[
        "sudo /usr/bin/pip install ansible==2.7.10"
      ]
    },
    {
      "type": "ansible-local",
      "playbook_file": "packer.yml",
      "playbook_dir": ".",
      "extra_arguments": [ "-e", "build_id={{user `build_id`}}", "-{{user `verbosity`}}" ]
    }
  ]
}