File Transfer (HTTP File Upload plugin) not works with converse.js

Hi, I’ve installed HTTP File Upload plugin on the Openfire server. But file transfer not works in converse.js. I’ve configured converse.js + Openfire following below link: Easiest way for Openfire + BOSH + Converse.js

After uploading the file I’m getting PUT net::ERR_NAME_NOT_RESOLVED error in the browser console and file lost from chat. Please help me to solve the problem