diff --git a/src/packages/discovery/component/setting/setting.component.ts b/src/packages/discovery/component/setting/setting.component.ts
index 1b07e01..30ffc2a 100644
--- a/src/packages/discovery/component/setting/setting.component.ts
+++ b/src/packages/discovery/component/setting/setting.component.ts
@@ -137,7 +137,7 @@ export class SettingComponent implements OnInit, AfterContentInit {
       return;
     }
 
-    console.log('convertTreeViewZone');
+    // console.log('convertTreeViewZone');
     const treeNodes: any[] = [];
 
     zones.forEach((value: Zone, key: string, map) => {
@@ -332,7 +332,7 @@ export class SettingComponent implements OnInit, AfterContentInit {
 
   convertViewService(services): any[] {
 
-    if (services === undefined && services.size <= 0) {
+    if (services === undefined || services === null || services.size <= 0) {
       return null;
     }
 
diff --git a/src/packages/discovery/store/discover/discover.reducer.ts b/src/packages/discovery/store/discover/discover.reducer.ts
index 326f3bb..84af354 100644
--- a/src/packages/discovery/store/discover/discover.reducer.ts
+++ b/src/packages/discovery/store/discover/discover.reducer.ts
@@ -52,14 +52,15 @@ export function reducer(state = initialState, action: Actions): State {
       }
 
       if (undefined === zone) {
-        console.error(`Discovery.discoveredHost: Zone[${host.zone.network}] is not exist`);
+        // console.error(`Discovery.discoveredHost: Zone[${host.zone.network}] is not exist`);
+        zone = new Map();
       }
       if (null === zone.hosts || undefined === zone.hosts) {
         zone.hosts = new Map();
         zone.hosts.set(host.ip, host);
       } else {
         if (zone.hosts.has(host.ip) === false) {
-          zone.host.set(host.ip, host);
+          zone.hosts.set(host.ip, host);
         }
       }
 
@@ -110,7 +111,7 @@ export function reducer(state = initialState, action: Actions): State {
         host = port.host;
       }
 
-      if (null === host.ports) {
+      if (null === host.ports || undefined === host.ports) {
         host.ports = new Map();
         host.ports.set(port.portNumber, port);
       } else {
@@ -163,20 +164,20 @@ export function reducer(state = initialState, action: Actions): State {
       // }
       const host: Host = zone.hosts.get(service.port.host.ip);
 
-      if (null === host.ports || undefined === host.ports.get(service.port.portNumber)) {
-        // console.error(`Discovery.DiscoveredPort: Port[${service.port.portNumber}] is not exist`);
+      if (null === host.ports || undefined === host.ports) {
         host.ports = new Map();
+        host.ports.set(service.port.portNumber, service.port);
       }
 
-      host.ports.set(service.port.portNumber, service.port);
-
       const port: Port = host.ports.get(service.port.portNumber);
 
-      if (null === port.services) {
+      if (null === port.services || undefined === port.services) {
         port.services = new Map();
       }
       port.services.set(service.serviceName, service);
 
+      host.ports.set(service.port.portNumber, port);
+      zone.hosts.set(host.ip, host);
       zones.set(zone.network, zone);
 
       const newZones: Map<string, Zone> = new Map();
diff --git a/src/packages/discovery/subscriber/discovery.subscriber.ts b/src/packages/discovery/subscriber/discovery.subscriber.ts
index 1adfcc2..c2d341d 100644
--- a/src/packages/discovery/subscriber/discovery.subscriber.ts
+++ b/src/packages/discovery/subscriber/discovery.subscriber.ts
@@ -41,6 +41,7 @@ export class DiscoverySubscriber {
   }
   @RPCSubscriber({method: 'DiscoveryService.discoveredService'})
   public discoveredService(service: Service): void {
+    this.loggerService.debug('DiscoverySubscriber.discoveredService service:', service);
     this.store.dispatch(new DiscoverStore.DiscoveredService(service));
   }
 }