AttributeError: 'NoneType' object has no attribute 'room_jid'

Versions

OS: Debian GNU/Linux stretch/sid
GTK+ Version: 3.24.7
PyGObject Version: 3.30.4
GLib Version : 2.58.3
python-nbxmpp Version: 0.9.91
Gajim Version: 1.1.92+b59d5434

Log

05/03/2019 19:43:38 (I) nbxmpp.client            | raising event from transport: :::::DATA RECEIVED::::
_____________
<presence to='MYJID@MYSERVER/gajim.MYRESOURCE' from='chatsecure@conference.magicbroccoli.de/Peter' type='unavailable'><x xmlns='http://jabber.org/protocol/muc#user'>
<item nick='peter' role='participant' affiliation='none'/><status code='303'/></x></presence>
_____________

05/03/2019 19:43:38 (D) nbxmpp.smacks            | IN, presence

Traceback (most recent call last):
  File "/home/andrey/progs/python-nbxmpp.git/nbxmpp/dispatcher.py", line 625, in dispatch
    handler['func'](session, stanza, properties)
  File "/home/andrey/progs/gajim.git/gajim/common/modules/muc.py", line 183, in _on_muc_user_presence
    app.contacts.remove_gc_contact(self._account, contact)
  File "/home/andrey/progs/gajim.git/gajim/common/contacts.py", line 484, in remove_gc_contact
    return self._accounts[account].gc_contacts.remove_gc_contact(gc_contact)
  File "/home/andrey/progs/gajim.git/gajim/common/contacts.py", line 694, in remove_gc_contact
    if gc_contact.room_jid not in self._rooms:
AttributeError: 'NoneType' object has no attribute 'room_jid'