#vulnerable code 
                                public void debugTraceLocal() {
        if (!traceDebugEnabled) {
            return;
        }

        System.out.println("---------------- Trace Information ---------------");
        Map<String, String> debugTraceMap = getDebugTraceMap();
        if (MapUtils.isNotEmpty(debugTraceMap)) {
            for (Map.Entry<String, String> entry : debugTraceMap.entrySet()) {
                System.out.println(entry.getKey() + "=" + entry.getValue());
            }
        }
        System.out.println(DiscoveryConstant.N_D_SERVICE_GROUP + "=" + pluginAdapter.getGroup());
        System.out.println(DiscoveryConstant.N_D_SERVICE_TYPE + "=" + pluginAdapter.getServiceType());
        System.out.println(DiscoveryConstant.N_D_SERVICE_ID + "=" + pluginAdapter.getServiceId());
        System.out.println(DiscoveryConstant.N_D_SERVICE_ADDRESS + "=" + pluginAdapter.getHost() + ":" + pluginAdapter.getPort());
        System.out.println(DiscoveryConstant.N_D_SERVICE_VERSION + "=" + pluginAdapter.getVersion());
        System.out.println(DiscoveryConstant.N_D_SERVICE_REGION + "=" + pluginAdapter.getRegion());
        System.out.println("--------------------------------------------------");
    } 
                            #location 9 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                public void debugTraceLocal() {
        if (!traceDebugEnabled) {
            return;
        }

        System.out.println("---------------- Trace Information ---------------");
        String traceId = getTraceId();
        String spanId = getSpanId();
        System.out.println(DiscoveryConstant.TRACE_ID + "=" + (StringUtils.isNotEmpty(traceId) ? traceId : StringUtils.EMPTY));
        System.out.println(DiscoveryConstant.SPAN_ID + "=" + (StringUtils.isNotEmpty(spanId) ? spanId : StringUtils.EMPTY));
        System.out.println(DiscoveryConstant.N_D_SERVICE_GROUP + "=" + pluginAdapter.getGroup());
        System.out.println(DiscoveryConstant.N_D_SERVICE_TYPE + "=" + pluginAdapter.getServiceType());
        System.out.println(DiscoveryConstant.N_D_SERVICE_ID + "=" + pluginAdapter.getServiceId());
        System.out.println(DiscoveryConstant.N_D_SERVICE_ADDRESS + "=" + pluginAdapter.getHost() + ":" + pluginAdapter.getPort());
        System.out.println(DiscoveryConstant.N_D_SERVICE_VERSION + "=" + pluginAdapter.getVersion());
        System.out.println(DiscoveryConstant.N_D_SERVICE_REGION + "=" + pluginAdapter.getRegion());
        Map<String, String> customizationMap = getCustomizationMap();
        if (MapUtils.isNotEmpty(customizationMap)) {
            for (Map.Entry<String, String> entry : customizationMap.entrySet()) {
                System.out.println(entry.getKey() + "=" + entry.getValue());
            }
        }
        System.out.println("--------------------------------------------------");
    }