code: def clean_config(config):
      
      if config.configspec is None:
          return
      vld = Validator()
      validation = config.validate(vld, copy=True)
      config.configspec.walk(check_default_values, validator=vld)
      fix_errors(config, validation)
      validation = config.validate(vld, copy=True)
      if not (validation == True):  # NOQA seems unpythonic but this validation evaluates that way only
          msg = 'The config could not be fixed. Make sure that all default values have the right type!'
          log.debug(msg)
          raise ConfigError(msg)
docs: Check if all values have defaults and replace errors with their default value
  
      :param config: the configobj to clean
      :type config: ConfigObj
      :returns: None
      :raises: ConfigError
  
      The object is validated, so we need a spec file. All failed values will be replaced
      by their default values. If default values are not specified in the spec, a
      MissingDefaultError will be raised. If the replaced values still fail validation,
      a ValueError is raised. This can occur if the default is of the wrong type.
  
      If the object does not have a config spec, this function does nothing.
      You are on your own then.