CONSTANT ERROR (MainThread) [aiohttp.server] Error handling request on 0.83

I’m getting these errors constantly after the upgrade to 0.83 - to the tune of multiple per second and ~1MB of log file per minute. Any idea what’s causing it and how I can resolve it?

2018-11-29 11:52:26 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/aiohttp/web_protocol.py", line 390, in start
    resp = await self._request_handler(request)
  File "/usr/local/lib/python3.5/dist-packages/aiohttp/web_app.py", line 366, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.5/dist-packages/aiohttp/web_middlewares.py", line 106, in impl
    return await handler(request)
  File "/usr/local/lib/python3.5/dist-packages/homeassistant/components/http/static.py", line 66, in staticresource_middleware
    return await handler(request)
  File "/usr/local/lib/python3.5/dist-packages/homeassistant/components/http/real_ip.py", line 34, in real_ip_middleware
    return await handler(request)
  File "/usr/local/lib/python3.5/dist-packages/homeassistant/components/http/ban.py", line 66, in ban_middleware
    return await handler(request)
  File "/usr/local/lib/python3.5/dist-packages/homeassistant/components/http/auth.py", line 97, in auth_middleware
    return await handler(request)
  File "/usr/local/lib/python3.5/dist-packages/homeassistant/components/http/real_ip.py", line 34, in real_ip_middleware
    return await handler(request)
  File "/usr/local/lib/python3.5/dist-packages/homeassistant/components/http/ban.py", line 66, in ban_middleware
    return await handler(request)
  File "/usr/local/lib/python3.5/dist-packages/homeassistant/components/http/auth.py", line 97, in auth_middleware
    return await handler(request)
  File "/usr/local/lib/python3.5/dist-packages/homeassistant/components/http/view.py", line 112, in handle
    result = handler(request, **request.match_info)
  File "/usr/local/lib/python3.5/dist-packages/homeassistant/components/api.py", line 191, in get
    user = request['hass_user']
  File "/usr/local/lib/python3.5/dist-packages/aiohttp/web_request.py", line 201, in __getitem__
    return self._state[key]
KeyError: 'hass_user'

This appears related to the HTTP sensor as all mine are throwing 500 errors.

This will be fixed in 0.83.1 via this PR: https://github.com/home-assistant/home-assistant/pull/18733