Request for profile photos has already been sent

[turt2live]

ERROR:aiotg:Bad Request: request for new profile photos has already been sent
ERROR:asyncio:Task exception was never retrieved
future: <Task finished coro=<aiotg_message() done, defined at /home/matrix/telematrix/telematrix/__init__.py:594> exception=RuntimeError('Bad Request: request for new profile photos has already been sent',)>
Traceback (most recent call last):
  File "/usr/lib/python3.5/asyncio/tasks.py", line 239, in _step
    result = coro.send(None)
  File "/home/matrix/telematrix/telematrix/__init__.py", line 603, in aiotg_message
    await update_matrix_displayname_avatar(chat.sender);
  File "/home/matrix/telematrix/telematrix/__init__.py", line 463, in update_matrix_displayname_avatar
    profile_photos = await TG_BOT.get_user_profile_photos(tg_user['id'])
  File "/home/matrix/telematrix/venv/lib/python3.5/site-packages/aiotg/bot.py", line 221, in api_call
    raise RuntimeError(err_msg)
RuntimeError: Bad Request: request for new profile photos has already been sent

Doesn't seem to be broken though, but is quite common.