An update of prosody-modules is required if you want to share files and pictures with the latest version of Conversations This version is currently on test in my personal prosody server without any issue.
I create a review https://reviews.freebsd.org/D14434
A commit references this bug: Author: rodrigo Date: Tue Feb 20 22:43:53 UTC 2018 New revision: 462461 URL: https://svnweb.freebsd.org/changeset/ports/462461 Log: Update prosody-modules to the latest version available This update is required to support XEP-0363 who becomes the standard way to attach files to chat. Several xmpp clients like conversation (conversation.im) moves to this new standard making impossible the use of the old http_upload module. PR: 226041 Submitted by: rodrigo Approved by: tcberner (maintainer) Changes: head/net-im/prosody-modules/Makefile head/net-im/prosody-modules/distinfo head/net-im/prosody-modules/pkg-plist
committed, thanks