Flutter - Compute: Illegal argument in isolate message : (object is a closure - Function '<anonymous closure>':.)

I am trying to unzip a file with compute as follows.

class FileDownloader{

  void downloadCompleteZip(Function(double) listenerFunction){
      Map<String, dynamic> map = {
        'fileRoot': localPath,
        "filePath": completeZipLocalPath,
        "listener": listenerFunction,
        "unzipPerc": unzipPerc
      };

      await compute(unzipCompleteZipToDisk, map);
  }
}
void unzipCompleteZipToDisk(Map<String, dynamic> params) async {}

When i call the downloadCompleteZip function i get the following error:

Invalid argument(s): Illegal argument in isolate message : (object is a closure - Function '':.)

My types for variables in map are, String and Function. I think the problem is that im trying to pass a function inside map here:

"listener": listenerFunction,

My downloadCompleteZip function is longer, for the sake of example i simplified it. I really need to pass the listener key as it sends messages to update UI. How may i solve this issue of functions not being able to pass within a map inside compute?

Also, kindly please dont suggest third party lib solutions. I have seen that libs like this can help. I am trying to keep 3rd party dependencies as low as possible.