[Python] Django UnicodeDecodeError: 'utf-8' codec can't decode byte 0xcf in position 5:...

I have not seen such a problem before. I rummaged through Google and did not find an answer. Although other people had similar issues, but their solutions did not suit mine. (Username in English path too)

Problem: in first Django project manage.py runserver has error:

Performing system checks...

System check identified no issues (0 silenced).

You have 18 unapplied migration(s). Your project may not work properly until you
apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.
August 04, 2022 - 01:06:46
Django version 4.1, using settings 'base.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
Exception in thread django-main-thread:
Traceback (most recent call last):
File "C:\pthn\lib\threading.py", line 932, in _bootstrap_inner
self.run()
File "C:\pthn\lib\threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "C:\pthn\lib\site-packages\django\utils\autoreload.py", line 64, in wrapp
er
fn(*args, **kwargs)
File "C:\pthn\lib\site-packages\django\core\management\commands\runserver.py",
line 158, in inner_run
run(
File "C:\pthn\lib\site-packages\django\core\servers\basehttp.py", line 236, in
run
httpd = httpd_cls(server_address, WSGIRequestHandler, ipv6=ipv6)
File "C:\pthn\lib\site-packages\django\core\servers\basehttp.py", line 76, in
__init__
super().__init__(*args, **kwargs)
File "C:\pthn\lib\socketserver.py", line 452, in __init__
self.server_bind()
File "C:\pthn\lib\wsgiref\simple_server.py", line 50, in server_bind
HTTPServer.server_bind(self)
File "C:\pthn\lib\http\server.py", line 140, in server_bind
self.server_name = socket.getfqdn(host)
File "C:\pthn\lib\socket.py", line 756, in getfqdn
hostname, aliases, ipaddrs = gethostbyaddr(name)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xcf in position 5: invalid
continuation byte


host folder(C:\Windows\System32\drivers\etc) -

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost

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