docs: def log_exception(exc_info=None, stream=None):
      """Log the 'exc_info' tuple in the server log."""
      exc_info = exc_info or sys.exc_info()
      stream = stream or sys.stderr
      try:
          from traceback import print_exception
          print_exception(exc_info[0], exc_info[1], exc_info[2], None, stream)
          stream.flush()
      finally:
          exc_info = None