With terraform version 13, I am getting error nvalid default value for variable in region params, how to fix that?

Terraform
1

variables.tf

variable "region" {
  default = "us-central1"
}

variable "zone" {
  description = "override default zone specified in region_params"
  default     = ""
}

variable "region_params" {
  description = "Map of default zones for each region. Can be overridden using the `zone`."
  type        = map(string)

  default = {
    asia-east1 = {
      zone = "asia-east1-b"
    }
    asia-east2 = {
      zone = "asia-east2-b"
    }
    asia-northeast1 = {
      zone = "asia-northeast1-b"
    }
    asia-south1 = {
      zone = "asia-south1-b"
    }
    asia-southeast1 = {
      zone = "asia-southeast1-b"
    }
    australia-southeast1 = {
      zone = "australia-southeast1-b"
    }
    europe-north1 = {
      zone = "europe-north1-b"
    }
    europe-west1 = {
      zone = "europe-west1-b"
    }
    europe-west2 = {
      zone = "europe-west2-b"
    }
    europe-west3 = {
      zone = "europe-west3-b"
    }
    europe-west4 = {
      zone = "europe-west4-b"
    }
    northamerica-northeast1 = {
      zone = "northamerica-northeast1-b"
    }
    southamerica-east1 = {
      zone = "southamerica-east1-b"
    }
    us-central1 = {
      zone = "us-central1-b"
    }
    us-east1 = {
      zone = "us-east1-b"
    }
    us-east4 = {
      zone = "us-east4-b"
    }
    us-west1 = {
      zone = "us-west1-b"
    }
    us-west2 = {
      zone = "us-west2-b"
    }
  }
}

variable "network" {
}

variable "instance_tags" {
  default = []
}

variable "ip_cidr_range" {
  description = "Subnetwork range - required"
}

variable "environment" {
  description = "The build environment tier"
  default     = "dev"
}

output "nat-gateway-ip" {
  value = module.nat.external_ip
}

./terraform0.13 init -reconfigure

There are some problems with the configuration, described below.

The Terraform configuration must be valid before initialization so that
Terraform can determine which modules and providers need to be installed.
╷
│ Error: Invalid default value for variable
│
│   on variables.tf line 71, in variable "region_params":
│   71:   default = {
│   72:     asia-east1 = {
│   73:       zone = "asia-east1-b"
│   74:     }
│   75:     asia-east2 = {
│   76:       zone = "asia-east2-b"
│   77:     }
│   78:     asia-northeast1 = {
│   79:       zone = "asia-northeast1-b"
│   80:     }
│   81:     asia-south1 = {
│   82:       zone = "asia-south1-b"
│   83:     }
│   84:     asia-southeast1 = {
│   85:       zone = "asia-southeast1-b"
│   86:     }
│   87:     australia-southeast1 = {
│   88:       zone = "australia-southeast1-b"
│   89:     }
│   90:     europe-north1 = {
│   91:       zone = "europe-north1-b"
│   92:     }
│   93:     europe-west1 = {
│   94:       zone = "europe-west1-b"
│   95:     }
│   96:     europe-west2 = {
│   97:       zone = "europe-west2-b"
│   98:     }
│   99:     europe-west3 = {
│  100:       zone = "europe-west3-b"
│  101:     }
│  102:     europe-west4 = {
│  103:       zone = "europe-west4-b"
│  104:     }
│  105:     northamerica-northeast1 = {
│  106:       zone = "northamerica-northeast1-b"
│  107:     }
│  108:     southamerica-east1 = {
│  109:       zone = "southamerica-east1-b"
│  110:     }
│  111:     us-central1 = {
│  112:       zone = "us-central1-f"
│  113:     }
│  114:     us-east1 = {
│  115:       zone = "us-east1-b"
│  116:     }
│  117:     us-east4 = {
│  118:       zone = "us-east4-b"
│  119:     }
│  120:     us-west1 = {
│  121:       zone = "us-west1-b"
│  122:     }
│  123:     us-west2 = {
│  124:       zone = "us-west2-b"
│  125:     }
│  126:   }
│
│ This default value is not compatible with the variable's type constraint: element "asia-east2": string required.
2

Hi @ukreddy-erwin,

Your variable type is defined as map(string), but the default value is a map(map(string)). You either need to change the default value or the variable type.