#vulnerable code 
                              public static void main(String[] args) throws IOException {
    String configPath = args[0];
    String log4jprops = args[1];

    PropertyConfigurator.configure(log4jprops);

    new UpdateDaemon(null, HostUtils.getHostName()).run();
  } 
                            #location 7 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                              public static void main(String[] args) throws IOException {
    String configPath = args[0];
    String log4jprops = args[1];

    PropertyConfigurator.configure(log4jprops);
    UpdateDaemonConfigurator conf = new YamlConfigurator(configPath);

    new UpdateDaemon(conf, HostUtils.getHostName()).run();
  }