Traceback (most recent call last): File "/home/simon/code/gajim/python-nbxmpp/nbxmpp/dispatcher.py", line 652, in dispatch handler['func'](session, stanza, properties) File "/home/simon/code/gajim/config/plugins.testprofile/omemo/modules/omemo.py", line 213, in _message_received from_jid = self._process_mam_message(properties) File "/home/simon/code/gajim/config/plugins.testprofile/omemo/modules/omemo.py", line 276, in _process_mam_message if properties.muc_user.jid is None:AttributeError: 'NoneType' object has no attribute 'jid'