#12 I couldn't able to work it out on Localhost Http server

Hi, It's working great in global websites, but when I wanted to use for python -m http.server, it didn't work. Read that in http server one file can download from 1 request at the same time. So wonder if app sending more than 1 download request and is it why it's giving me me failed message? or maybe app can't read information in localhost because firefox doesn't share. Thank you for the app.