Error appears in the log when /dev-info shows

[km4lin]

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Home Assistant release (hass --version): 0.62.1

Python release (python3 --version): Python 3.6.4

Component/platform: aiohttp.server

Description of problem:
Error appears in the log when I go to /dev-info and/or many times when hass just working.

Expected:
No error

Problem-relevant configuration.yaml entries and steps to reproduce:

Traceback (if applicable):

ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\site-packages\aiohttp\web_protocol.py", line 410, in start
    resp = yield from self._request_handler(request)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\site-packages\aiohttp\web.py", line 325, in _handle
    resp = yield from handler(request)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\site-packages\aiohttp\web_middlewares.py", line 93, in impl
    return (yield from handler(request))
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\site-packages\homeassistant\components\http\ban.py", line 58, in ban_middleware
    return (yield from handler(request))
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\asyncio\coroutines.py", line 215, in coro
    res = yield from res
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\asyncio\coroutines.py", line 215, in coro
    res = yield from res
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\site-packages\homeassistant\components\http\__init__.py", line 430, in handle
    result = yield from result
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\asyncio\coroutines.py", line 212, in coro
    res = func(*args, **kw)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\site-packages\homeassistant\components\system_log\__init__.py", line 178, in get
    for x in self.handler.records])
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\site-packages\homeassistant\components\system_log\__init__.py", line 178, in <listcomp>
    for x in self.handler.records])
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\site-packages\homeassistant\components\system_log\__init__.py", line 160, in _convert
    'source': _figure_out_source(record, call_stack, hass),
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\site-packages\homeassistant\components\system_log\__init__.py", line 140, in _figure_out_source
    match = re.match(r'(?:{})/(.*)'.format('|'.join(paths)), pathname)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\re.py", line 172, in match
    return _compile(pattern, flags).match(string)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\re.py", line 301, in _compile
    p = sre_compile.compile(pattern, flags)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\sre_compile.py", line 562, in compile
    p = sre_parse.parse(p, flags)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\sre_parse.py", line 855, in parse
    p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\sre_parse.py", line 416, in _parse_sub
    not nested and not items))
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\sre_parse.py", line 765, in _parse
    p = _parse_sub(source, state, sub_verbose, nested + 1)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\sre_parse.py", line 416, in _parse_sub
    not nested and not items))
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\sre_parse.py", line 502, in _parse
    code = _escape(source, this, state)
  File "C:\Users\Latitude\AppData\Local\Programs\Python\Python36\lib\sre_parse.py", line 368, in _escape
    raise source.error("incomplete escape %s" % escape, len(escape))
sre_constants.error: incomplete escape \U at position 5

Additional info:

[OttoWinter]

So apparently, using regex on Windows paths doesn't work too well and we should replace the backslash \ (written as \\ in string literals) in windows paths by \\ in order to make regexes work for Windows. See gcovr/gcovr#158, datafolklabs/boss#31, recipy/recipy#126

[km4lin]

Thank you very much for your answer but what should I do for fix this? Thanks for any advice.

[OttoWinter]

Ah it seems like this was already fixed by #12197; so the only thing you can do now really is to either wait for a new home assistant version or use the "bleeding edge" version right away.

[km4lin]

Thank you very much. I will wait :)

[Danielhiversen]

This should be fixed in the dev version and will be part of 0.63