I am trying to display a logo using VideLogoOption
vlc.libvlc_video_set_logo_int(pi,vlc.VideoLogoOption.logo_enable,1)
vlc.libvlc_video_set_logo_string(pi,vlc.VideoLogoOption.logo_file,"Media/GUI.png")
Error: "argument 3: TypeError: wrong type" error

How to pass the file path?