Traceback (most recent call last): File "/usr/lib/python3/dist-packages/nbxmpp/dispatcher.py", line 652, in dispatch handler['func'](session, stanza, properties) File "/usr/lib/python3/dist-packages/gajim/common/modules/receipts.py", line 58, in _process_message_receipt self._con.connection.send(stanza.buildReceipt()) File "/usr/lib/python3/dist-packages/nbxmpp/simplexml.py", line 482, in __getattr__ raise AttributeErrorAttributeError