环境：windows7 & pyhotn3.7 &django2.2

首次安装django，运行runserver 报如下错误：

  Traceback (most recent call last):
  File "C:\Python37\lib\wsgiref\handlers.py", line 137, in run
    self.result = application(self.environ, self.start_response)
  File "C:\Python37\lib\site-packages\django\contrib\staticfiles\handlers.py", line 65, in __call__
    return self.application(environ, start_response)
  File "C:\Python37\lib\site-packages\django\core\handlers\wsgi.py", line 141, in __call__
    response = self.get_response(request)
  File "C:\Python37\lib\site-packages\django\core\handlers\base.py", line 75, in get_response
    response = self._middleware_chain(request)
  File "C:\Python37\lib\site-packages\django\core\handlers\exception.py", line 36, in inner
    response = response_for_exception(request, exc)
  File "C:\Python37\lib\site-packages\django\core\handlers\exception.py", line 90, in response_for_exception
    response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
  File "C:\Python37\lib\site-packages\django\core\handlers\exception.py", line 125, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "C:\Python37\lib\site-packages\django\views\debug.py", line 94, in technical_500_response
    html = reporter.get_traceback_html()
  File "C:\Python37\lib\site-packages\django\views\debug.py", line 332, in get_traceback_html
    t = DEBUG_ENGINE.from_string(fh.read())
UnicodeDecodeError: 'gbk' codec can't decode byte 0xa6 in position 9737: illegal multibyte sequence

查看错误栈最后一行发现是 编码问题
找到django 源码 "C:\Python37\lib\site-packages\django\views\debug.py" 332行位置 ,增加utf-8编码，问题解决

      def get_traceback_html(self):
        """Return HTML version of debug 500 HTTP error page."""
        with Path(CURRENT_DIR, 'templates', 'technical_500.html').open( encoding='utf-8') as fh:
            t = DEBUG_ENGINE.from_string(fh.read())
        c = Context(self.get_traceback_data(), use_l10n=False)
        return t.render(c)

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