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

//    PartDaemonConfigurator configurator = new YamlConfigurator(configPath);
    PropertyConfigurator.configure(log4jprops);
    new Daemon(null).run();
  } 
                            #location 7 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                              public static void main(String[] args) throws Exception {
    String configPath = args[0];
    String log4jprops = args[1];

    DataDeployerConfigurator configurator = new YamlDataDeployerConfigurator(configPath);
    PropertyConfigurator.configure(log4jprops);
    new Daemon(configurator).run();
  }