#vulnerable code 
                                @BeforeEach
    void setUp()
    {
        System.setProperty( DRIVER_METRICS_ENABLED_KEY, "true" );
        logging = new LoggerNameTrackingLogging();

        Config config = Config.builder()
                .withoutEncryption()
                .withLogging( logging )
                .withMaxConnectionPoolSize( 100 )
                .withConnectionAcquisitionTimeout( 1, MINUTES )
                .build();

        driver = (InternalDriver) GraphDatabase.driver( databaseUri(), authToken(), config );
        System.setProperty( DRIVER_METRICS_ENABLED_KEY, "false" );

        ThreadFactory threadFactory = new DaemonThreadFactory( getClass().getSimpleName() + "-worker-" );
        executor = Executors.newCachedThreadPool( threadFactory );
    } 
                            #location 14 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @BeforeEach
    void setUp()
    {
        System.setProperty( DRIVER_METRICS_ENABLED_KEY, "true" );
        logging = new LoggerNameTrackingLogging();

        Config.ConfigBuilder builder = Config.builder()
                .withLogging( logging )
                .withMaxConnectionPoolSize( 100 )
                .withConnectionAcquisitionTimeout( 1, MINUTES );

        driver = (InternalDriver) GraphDatabase.driver( databaseUri(), authToken(), config( builder ) );
        System.setProperty( DRIVER_METRICS_ENABLED_KEY, "false" );

        ThreadFactory threadFactory = new DaemonThreadFactory( getClass().getSimpleName() + "-worker-" );
        executor = Executors.newCachedThreadPool( threadFactory );
    }