Can't create new user in firebase

{
  "uid": null,
  "success": false,
  "error": "Credential implementation provided to initializeApp() via the \"credential\" property has insufficient permission to access the requested resource. See https://firebase.google.com/docs/admin/setup for details on how to authenticate this SDK with appropriate permissions."
}

{
  "uid": null,
  "success": false,
  "error": "Credential implementation provided to initializeApp() via the \"credential\" property has insufficient permission to access the requested resource. See https://firebase.google.com/docs/admin/setup for details on how to authenticate this SDK with appropriate permissions."
}