Error in FIRST song in playlist when use save_playlist

[fx-pro]

It always happen to me, first song in playlist always raise error.
I've temporarily fix it myself by add ONE LINE in downloader.py after line - 123

    playlist_file_lines = (
        playlist_file_path_obj.open("r", encoding="utf8").readlines()
        if playlist_file_path_obj.exists()
        else []
    )
    playlist_track += 1           <–––––––––––– THIS
    if len(playlist_file_lines) < playlist_track:
        playlist_file_lines.extend(
            "\n" for _ in range(playlist_track - len(playlist_file_lines))
        )