I am trying to set up Databricks with my AWS account but I am facing some issues, I followed the steps to create a new Databricks workspace using the AWS CloudFormation template or Databricks setup guide, But the CloudFormation stack fails every time. Because of this I cannot create the workspace or connect Databricks with my AWS account. Has anyone seen this issue before. What are some common reasons for stack creation to fail. Also how can I activate a Databricks subscription for an individual user.