Terraform+Azure+GithubActions

I need to deploy a storage account to azure with terraform. I am using Github Actions as CICD platform. For this need i need to create a service principal and provide contribiutor role to it. But i am unable to do it. I have attached a image. How can i solve this ?

You can’t assign roles in the Azure Playground. Use the Azure and Terraform playground - scroll down the Playgrounds page a little.