Laravel Nova, CSV Import issue

Hello everyone,

I am using using this plugin :

        "simonhamp/laravel-nova-csv-import": "0.3.0",

to import CSV in Nova.

I am getting this erorr upon uploading a csv file :

Sorry, we couldn't import that file.

Upon stack tracing, I find in UploadController:

 try {
            (new Importer)->toCollection($file, null);
        } catch (\Exception $e) {
            return response()->json(['result' => 'error', 'message' => 'Sorry, we could not import that file'], 422);
        }

Here the error is :

{
"result": "error",
"message": "foreach() argument must be of type array|object, null given"
} 

Anyone faced this issue earlier?