diff --git a/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/RequestOptions.java b/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/RequestOptions.java
index 3ebc77c468..c74aa4bb7e 100644
--- a/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/RequestOptions.java
+++ b/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/RequestOptions.java
@@ -2,6 +2,7 @@ package com.mogo.eagle.core.network;
 
 
 import android.content.Context;
+import android.view.KeyEvent;
 
 import com.mogo.eagle.core.network.utils.Util;
 
@@ -96,7 +97,7 @@ public class RequestOptions {
     }
 
     public Object getCaller() {
-        return caller;
+        return caller == null ? null : caller;
     }
 
     public Context getContext() {
diff --git a/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/SubscribeImpl.java b/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/SubscribeImpl.java
index 3c5a354a61..694ce2bec2 100644
--- a/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/SubscribeImpl.java
+++ b/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/SubscribeImpl.java
@@ -28,7 +28,7 @@ public abstract class SubscribeImpl<T extends BaseData> implements Observer<T> {
     }
 
     private void onFinish() {
-        if (!Util.checkAlive(mRequestOptions.getCaller())) {
+        if (Util.checkAlive(mRequestOptions.getCaller())) {
         }
     }
 
diff --git a/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/utils/Util.java b/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/utils/Util.java
index 397f5bc20d..aadb0d10db 100644
--- a/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/utils/Util.java
+++ b/core/mogo-core-network/src/main/java/com/mogo/eagle/core/network/utils/Util.java
@@ -15,30 +15,37 @@ import com.mogo.eagle.core.network.CallerNotAliveException;
 
 public class Util {
 
-    public static boolean checkAlive( Object caller ) {
-        if ( caller instanceof Activity) {
-            return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1 ? !( ( Activity ) caller ).isDestroyed() : !( ( Activity ) caller ).isFinishing();
-        } else if ( caller instanceof Fragment) {
-            return ( ( Fragment ) caller ).isAdded();
-        } else if ( caller instanceof androidx.fragment.app.Fragment ) {
-            return ( ( androidx.fragment.app.Fragment ) caller ).isAdded();
-        } else if ( caller instanceof View) {
-            return true;
-        } else if ( caller instanceof Dialog) {
-            return ( ( Dialog ) caller ).getWindow() != null;
-        } else if ( caller instanceof PopupWindow) {
-            return ( ( PopupWindow ) caller ).getContentView() != null;
+    public static boolean checkAlive(Object caller ) {
+        if ( caller == null){
+            return false;
+        }
+        if ( caller instanceof Activity) {
+            return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1 ? ((Activity) caller).isDestroyed() : ((Activity) caller).isFinishing();
+        } else if ( caller instanceof Fragment) {
+            return !((Fragment) caller).isAdded();
+        } else if ( caller instanceof androidx.fragment.app.Fragment ) {
+            return !((androidx.fragment.app.Fragment) caller).isAdded();
+        } else if ( caller instanceof View) {
+            return false;
+        } else if ( caller instanceof Dialog) {
+            return ((Dialog) caller).getWindow() == null;
+        } else if ( caller instanceof PopupWindow) {
+            return ((PopupWindow) caller).getContentView() == null;
+        } else {
+            return false;
         }
-        return caller != null;
     }
 
     public static void assertCallerAlive( Object caller ) throws CallerNotAliveException {
-        if ( !checkAlive( caller ) ) {
+        if (checkAlive(caller)) {
             throw new CallerNotAliveException( "Caller is not alive any more" );
         }
     }
 
     public static Context getContext(Object object ) {
+        if( object == null){
+            return null;
+        }
         if ( object instanceof Activity ) {
             return ( Activity ) object;
         } else if ( object instanceof Fragment ) {