Terraform providers

When I try to create an AWS RDS Terraform file, I receive an error. How do I fix it?

**Could not retrieve the list of available versions for provider hashicorp/db: provider
│ registry registry.terraform.io does not have a provider named
Terraform Registry

│ All modules should specify their required_providers so that external consumers will get the
│ correct providers when using a module. To see which modules are currently depending on
│ hashicorp/db, run the following command:
│ terraform providers