folder_not_empty

{
  "type": "https://docs.api.rask.ai/errors/folder_not_empty",
  "title": "Folder not empty",
  "status": 409,
  "detail": "Folder 41aa8f3e still holds 4 projects.",
  "instance": "urn:uuid:7d5c0e9a-3f1b-4c2e-9a8d-6b4f2e1c0d93",
  "code": "folder_not_empty",
  "retryable": false,
  "retry": "none",
  "recommendation": "fix_request",
  "hint": "Move the projects with updateProject or delete them with deleteProjectBatch first.",
  "errors": [],
  "project_count": 4
}