While I am craeting terraform it shows me this error please give the solution for this

Question

Error: creating EC2 Instance: InvalidParameterValue: Value () for parameter groupId is invalid. The value cannot be empty
│       status code: 400, request id: 3cbb1699-10b3-4aa0-8d56-dc7e39677d10
│
│   with aws_instance.terraforminstance[0],
│   on Firstterraform.tf line 7, in resource "aws_instance" "terraforminstance":
│    7: resource "aws_instance" "terraforminstance" {
│