How can I find out why am I not able to remove the empty stack?

error: [403] You do not have permission to perform this operation.

The stack has been created by a former member of organization and I'm a member as well. EDIT: So it looks like that only org admin can delete stacks. I hope that Pulumi IAM will be released soon because this is a mildly annoying issue.

Fine grained permissions is something that’s been requested and discussed before and it’s on our backlog 🙂