Error: Invalid reference

╷
│ Error: Invalid reference
│
│   on .terraform/modules/paht/to/your/module.tf line 5, in resource "aws_db_subnet_group" "this":
│    5:   name       = your_name
│
│ A reference to a resource type must be followed by at least one attribute access, specifying the resource name.

╷
│ Error: Invalid reference
│
│   on main.tf line 14, in resource "aws_db_instance" "my_mariadb_instance":
│   14:   db_subnet_group_name = subnet-0526dd2e6xxxxx
│
│ A reference to a resource type must be followed by at least one attribute access, specifying the resource name.
╵

╷
│ Error: Invalid reference
│
│   on main.tf line 29, in module "vpc":
│   29:  create_database_subnet_group = my_yes_wrong_anwser
│
│ A reference to a resource type must be followed by at least one attribute access, specifying the resource name.
╵
 Solution: make your that boolean resources such as create_database_subnet_group use: true or false

Related

• Error: Reference to undeclared resource
• key_name
• Error: Missing resource instance key
• [0]
• count

See also

• terraform plan: [ -refresh-only | -lock=false | -target | -var-file | will be created | --help], Terraform plan errors, Terraform plan examples, Terraform plan execution errors, (known after apply)