Downloading not Starting on OPPO with android 11

I've been debugging it for a day but the issue persists, when I start downloading it prints "set process for client: com.example.igb" and nothing happens.
I've tested it on several Android 11 phones such as One Plus and it worked fine, but on Oppo, it didn't.

My AndroidManifest.xml:

My code:

@override
void initState() {
super.initState();
FeedbackController feedbackController =
Provider.of(context, listen: false);
IsolateNameServer.registerPortWithName(
port.sendPort, "downloader_send_port");
port.listen((dynamic data) {
printError("here");
String id = data[0];

DownloadTaskStatus status = DownloadTaskStatus.values[data[1]];
double progress = data[2] / 100;
printWarning(
"Received download update - id: $id, status: $status, progress: $progress%");
feedbackController.updateStatus(id, status, progress);
setState(() {});
});
FlutterDownloader.registerCallback(downloadCallback);
}

@override
void dispose() {
IsolateNameServer.removePortNameMapping("downloader_send_port");
super.dispose();
}

@pragma('vm:entry-point')
static void downloadCallback(String id, int status, int progress) {
// printWarning("Download callback - progress: $progress");
IsolateNameServer.lookupPortByName('downloader_send_port')
?.send([id, status, progress]);
}

Start by reproducing the download on an OPPO device running Android 11 and inspect the AndroidManifest.xml configuration alongside the initState and downloadCallback code. Compare logs and task status updates with a working Android 11 device; done means the download starts and callback progress reaches the Flutter app.

Written by the indexing model from the issue text.