Trying to add a note to a vcard results in an error reporter dialogue box.

Versions

OS: FreeBSD
GTK Version: 3.24.29
PyGObject Version: 3.38.0
GLib Version : 2.66.8
python-nbxmpp Version: 3.0.0-dev1
Gajim Version: 1.4.0-dev1

Traceback

Traceback (most recent call last):
  File "/Users/ellenor/.local/lib/python3.8/site-packages/gajim/gtk/profile.py", line 178, in _on_action
    self._vcard_grid.add_new_property(key)
  File "/Users/ellenor/.local/lib/python3.8/site-packages/gajim/gtk/vcard_grid.py", line 185, in add_new_property
    prop = self._vcard.add_property(name, **kwargs)
  File "/Users/ellenor/.local/lib/python3.8/site-packages/nbxmpp/modules/vcard4.py", line 1092, in add_property
    prop = PROPERTY_CLASSES.get(name)(*args, **kwargs)
TypeError: __init__() got an unexpected keyword argument 'value_type'

Steps to reproduce the problem

On a multiple-account installation of Gajim, follow this path through the UI: Accounts -> your account -> Profile -> Add field -> Notes.

Expected behavior

A free-form notes field appears, allowing me to enter a short biography of myself. (This occurs in other Jabber clients which support vcards.)