"result.listen" is not emitting the response object in flutter_downloader: ^1.5.2

I tried to use the package (version "1.5.2") in my application and everything is working file except the `result.listen()` method. It's not emitting any event for us to capture and process the response from the API.

Phone: "Oneplus 6"
OS: "Android 10"

code:

```dart
final flutterUploader = FlutterUploader();

final tokenId = await flutterUploader.enqueue(
url: 'https://example.com/post',

files: [
FileItem(
filename: 'name of file.ext',
savedDir: '/path/to',
fieldname: 'field',
)
],

method: UploadMethod.POST,

headers: {},

data: {},

showNotification: true,

tag: 'tag_name',
);

final subscription = flutterUploader.progress.listen((progress) {
log.print('progress.progress subscription', '${progress.progress}');
log.print('progress.status subscription', '${progress.status}');
});

final result = flutterUploader.result.listen((progress) {
log.print('progress.response result', '${progress.response}');
log.print('progress.status result', '${progress.status}');
log.print('progress.statusCode result', '${progress.statusCode}');
});
```

The `progress.listen` method is emitting event just fine while the `flutterUploader.result` event is silent even if the upload was 100 percentage completed.

What do we do?