[firebase_messaging] {"message":"Internal Server Error","error":"SenderId mismatch"}

[daebak]

I have compiled the following project with a sample.
Project path: ..\flutterfire\packages\firebase_messaging\firebase_messaging\example
Normal sample works normally.

Next, when the google-services.json file is changed to mine, if the following error occurs, the message will not be sent.

Please tell me how to fix it

source

---

 final response = await http.post(
    'https://api.rnfirebase.io/messaging/send',
    headers: <String, String>{
      'Content-Type':'application/json; charset=UTF-8',
    },
    body: constructFCMPayload(_token),
  );
  print(response.request.headers.values.toString()+response.body);
  print('FCM request for device sent!');

---

log (response)
{"message":"Internal Server Error","error":"SenderId mismatch"}