Versions

• OS: Linux
• GTK+ Version: 3.22.29
• PyGObject Version: 3.28.2
• python-nbxmpp Version: 0.6.4
• Gajim Version: 1.0.1

Traceback

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/nbxmpp/dispatcher_nb.py", line 498, in dispatch
    handler['func'](session, stanza)
  File "/usr/lib/python3.6/site-packages/gajim/common/protocol/bytestream.py", line 753, in _bytestreamResultCB
    app.socks5queue.send_file(file_props, self.name, 'server')
  File "/usr/lib/python3.6/site-packages/gajim/common/socks5.py", line 322, in send_file
    for key in self.senders.keys():
RuntimeError: dictionary changed size during iteration

Steps to reproduce the problem

Not really sure. I had send a file and was waiting for the recipient to accept it. I was doing something else in another window when the error message popped up. When I checked the file sending dialog, the file had been accepted and transmitted (100%)