diff --git a/android/src/main/java/com/finogeeks/mop/api/mop/ExtensionApiModule.java b/android/src/main/java/com/finogeeks/mop/api/mop/ExtensionApiModule.java
index 70269da..b6cc51f 100644
--- a/android/src/main/java/com/finogeeks/mop/api/mop/ExtensionApiModule.java
+++ b/android/src/main/java/com/finogeeks/mop/api/mop/ExtensionApiModule.java
@@ -6,6 +6,7 @@ import android.os.Looper;
 import android.util.Log;
 
 import com.finogeeks.lib.applet.client.FinAppClient;
+import com.finogeeks.lib.applet.client.FinAppTrace;
 import com.finogeeks.mop.api.BaseApi;
 import com.finogeeks.mop.interfaces.ICallback;
 import com.finogeeks.mop.service.MopPluginService;
@@ -22,6 +23,8 @@ import io.flutter.plugin.common.MethodChannel;
 
 public class ExtensionApiModule extends BaseApi {
 
+    private static final String TAG = "ExtensionApiModule";
+
     private Handler handler = new Handler(Looper.getMainLooper());
 
     public ExtensionApiModule(Context context) {
@@ -52,18 +55,33 @@ public class ExtensionApiModule extends BaseApi {
                         @Override
                         public void success(Object result) {
                             String json = GsonUtil.gson.toJson(result);
+                            FinAppTrace.d(ExtensionApiModule.TAG, "channel invokeMethod:" + name
+                                    + " success, result=" + result + ", json=" + json);
                             JSONObject ret = null;
-                            if (json != null && !json.equals("null"))
+                            if (json != null && !json.equals("null")) {
                                 try {
                                     ret = new JSONObject(json);
+                                    if (ret.has("errMsg")) {
+                                        String errMsg = ret.getString("errMsg");
+                                        if (errMsg.startsWith(name + ":fail")) {
+                                            iCallback.onFail(ret);
+                                            return;
+                                        }
+                                    }
                                 } catch (JSONException e) {
                                     e.printStackTrace();
                                 }
+                            }
+
                             iCallback.onSuccess(ret);
                         }
 
                         @Override
                         public void error(String errorCode, String errorMessage, Object errorDetails) {
+                            FinAppTrace.e(ExtensionApiModule.TAG, "channel invokeMethod:" + name
+                                    + " error, errorCode=" + errorCode
+                                    + ", errorMessage=" + errorMessage
+                                    + ", errorDetails=" + errorDetails);
                             iCallback.onFail();
                         }