EMR Workspace failed to start error

Hi,

Looking to confirm how things work!

• I have created a EMR cluster with ec2 which closes down after no use
• I have created a EMR Studio using the terraform module: terraform-aws-modules/emr/aws//modules/studio

Set via:

module "emr_studio_iam" {
  source = "terraform-aws-modules/emr/aws//modules/studio"
  name                = "studio-module"
  auth_mode           = "IAM"
  default_s3_location = "s3://dev-emr/studio"
  create_service_role = true
  service_role_name = "studio-module-role"
  vpc_id     = data.aws_vpc.this.id
  subnet_ids = [data.aws_subnets.intra.ids[0], data.aws_subnets.intra.ids[1], data.aws_subnets.intra.ids[2]]
}

When trying to create a workspace in the EMR Studio I get the error:

Workspace manual-workspace failed to start
Workspace(notebook) is stopped. Service Role does not have the required permissions. You are not authorized to perform this operation. Encoded authorization failure message:

Im confused with the docs as theres references notebooks but nothing about workspaces for permissions. its only studio. I take it that notebooks was the old way of doing things? But im not clear about how we are meant to do it now? OR what permissions i should set the studio role (Then again is it the service or the user role thats got the problem!)

Any insight would be welcome!