can't compare offset-naive and offset-aware datetimes

Poezio version: 16fee413
Slixmpp version: slixmpp@c3fbc6cb

2020-04-20 06:58:59,594 ERROR:base_events:Task exception was never retrieved
future: <Task finished name='Task-190025' coro=<on_tab_open() done, defined at /usr/lib/python3.8/site-packages/poezio/mam.py:191> exception=TypeError("can't compare offset-naive and offset-aware datetimes")>
Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/poezio/mam.py", line 197, in on_tab_open
    if time < end:
TypeError: can't compare offset-naive and offset-aware datetimes