Erro ao executar terraform apply - VPCResourceNotSpecified

Olá pessoal,

Ontem quando estava fazendo o curso, tentei executar o código dos vídeos e me deparei com o erro abaixo.

Minha dúvida é a seguinte: o instrutor fez alguma configuração prévia de VPC padrão na AWS para isso funcionar?

Detalhes:

Versões:

Terraform v0.15.4
on linux_amd64
+ provider registry.terraform.io/hashicorp/aws v2.70.0

aws-cli/2.2.5 Python/3.8.8 Linux/5.4.0-73-generic exe/x86_64.ubuntu.20 prompt/off

Código:

provider "aws" {
  version = "~> 2.0"
  region = "us-east-1"
}

resource "aws_instance" "dev" {
  count = 2
  ami = "ami-0747bdcabd34c712a"
  instance_type = "t2.micro"
  key_name = "terraform-aws"
  tags = {
    Name = "dev${count.index}"
  }
}

Erro:

│ Error: Error launching source instance: VPCResourceNotSpecified: The specified instance type can only be used in a VPC. A subnet ID or network interface ID is required to carry out the request.
│       status code: 400, request id: d7467f37-b91d-4af3-b116-ae34fc8eeb39
│
│   with aws_instance.dev[1],
│   on main.tf line 6, in resource "aws_instance" "dev":
│    6: resource "aws_instance" "dev" {
│
╵
╷
│ Error: Error launching source instance: VPCResourceNotSpecified: The specified instance type can only be used in a VPC. A subnet ID or network interface ID is required to carry out the request.
│       status code: 400, request id: 542a581e-e571-43f9-99ec-96c86715c8cf
│
│   with aws_instance.dev[0],
│   on main.tf line 6, in resource "aws_instance" "dev":
│    6: resource "aws_instance" "dev" {