aiohttp.access error when closing browser

[shortbloke]

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Home Assistant release (hass --version): 0.60

Python release (python3 --version): 3.5.3

Component/platform: aiohttp.access

Description of problem:
When closing a browser window an error is recorded to the log file

Expected:
No errors reported when closing a browser

Problem-relevant configuration.yaml entries and steps to reproduce:
Configuration files: https://github.com/shortbloke/home_assistant_config

1. Start Browser (Google Chrome Version 63.0.3239.84 (Official Build) (64-bit))
2. Navigate and logon to HASS site
3. Closed the browser window
4. Check the home-assistant.log file

Traceback (if applicable):

2017-12-18 14:21:20 ERROR (MainThread) [aiohttp.access] Error in logging
Traceback (most recent call last):
  File "/srv/hass/lib/python3.5/site-packages/aiohttp/helpers.py", line 554, in __get__
    return inst._cache[self.name]
KeyError: 'remote'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/srv/hass/lib/python3.5/site-packages/aiohttp/helpers.py", line 521, in log
    for key, value in fmt_info:
  File "/srv/hass/lib/python3.5/site-packages/aiohttp/helpers.py", line 513, in <genexpr>
    for key, method in self._methods)
  File "/srv/hass/lib/python3.5/site-packages/aiohttp/helpers.py", line 473, in _format_a
    ip = request.remote
  File "/srv/hass/lib/python3.5/site-packages/aiohttp/helpers.py", line 556, in __get__
    val = self.wrapped(inst)
  File "/srv/hass/lib/python3.5/site-packages/aiohttp/web_request.py", line 319, in remote
    peername = transport.get_extra_info('peername')
  File "/usr/lib/python3.5/asyncio/sslproto.py", line 306, in get_extra_info
    return self._ssl_protocol._get_extra_info(name, default)
  File "/usr/lib/python3.5/asyncio/sslproto.py", line 546, in _get_extra_info
    return self._transport.get_extra_info(name, default)
AttributeError: 'NoneType' object has no attribute 'get_extra_info'

[MartinHjelmare]

Looks like duplicate of #9762.