FCMの404メッセージ

2025-08-08

---

{
  error: {
    code: 404,
    message: 'Requested entity was not found.',
    status: 'NOT_FOUND',
    details: [
      {
        '@type': 'type.googleapis.com/google.firebase.fcm.v1.FcmError',
        errorCode: 'UNREGISTERED'
      }
    ]
  }
}