How to fix Error: Expected attribute terminator in Terraform

terraform validate

# Wrong - missing comma after name
resource "aws_instance" "example" {
  ami           = "ami-12345"
  instance_type = "t2.micro"
  tags = {
    Name = "example"
  }
}

# Correct - comma between attributes
resource "aws_instance" "example" {
  ami           = "ami-12345"
  instance_type = "t2.micro",
  tags = {
    Name = "example"
  }
}

# Wrong - missing closing quote
resource "aws_instance" "example" {
  ami = "ami-12345
  instance_type = "t2.micro"
}

# Correct - properly quoted strings
resource "aws_instance" "example" {
  ami           = "ami-12345"
  instance_type = "t2.micro"
}

# Wrong - missing closing brace
resource "aws_instance" "example" {
  tags = {
    Name = "example"
    Environment = "prod"
}

# Correct - all braces closed
resource "aws_instance" "example" {
  tags = {
    Name = "example"
    Environment = "prod"
  }
}

# Use 2 or 4 spaces consistently
resource "aws_instance" "example" {
  ami           = "ami-12345"
  instance_type = "t2.micro"
}

# Also works with 4 spaces
resource "aws_instance" "example" {
    ami           = "ami-12345"
    instance_type = "t2.micro"
}

# Wrong - colon without quotes
ami = ami:123:456

# Correct - special characters quoted
ami = "ami:123:456"
description = "This is a description with: colons and - dashes"

# Wrong - missing comma in map
tags = {
  Name = "example"
  Env = "prod"
}

# Correct - comma between map entries
tags = {
  Name = "example",
  Env = "prod"
}

# Correct - list syntax (comma-separated values in brackets)
subnets = ["subnet-123", "subnet-456", "subnet-789"]

terraform validate