File Transfer

Hi,

I am new to OpenFire, I am trying to transfer files using Strophe.js from my client (written in javascript).

I am following File Transfer using bytestreams and all the things are getting done except last step i.e. when I try to activate proxy connection as:

t2@myhost/Spark 2.6.3

I am getting:

How do I get out of this problem? Please help.