diff --git a/lib/core/logger.dart b/lib/core/logger.dart
index a1d30ea..fc9ffc6 100644
--- a/lib/core/logger.dart
+++ b/lib/core/logger.dart
@@ -34,7 +34,7 @@ class SimpleLogPrinter extends LogPrinter {
   }
 
   String formatStackTrace(StackTrace stackTrace, int methodPosition) {
-    var lines = stackTrace.toString().split('\n');
+    var lines = stackTrace.toString()?.split('\n');
     var formatted = <String>[];
     var count = 0;
     for (var line in lines) {
diff --git a/lib/core/services/DataService.dart b/lib/core/services/DataService.dart
index 781d672..c28b250 100644
--- a/lib/core/services/DataService.dart
+++ b/lib/core/services/DataService.dart
@@ -200,8 +200,8 @@ class DataService extends BaseService {
     try {
       String token = user.token;
       Response<dynamic> goods = await _api.getGoodsFromServer(token);
-      if(goods.operation==false){
-        log.w('session is closed');
+      if(goods.operation==false && [401,402,403,412].contains(goods.status)){
+        log.i('session is closed');
         return false;
       }
       Response<dynamic> categories = await _api.getCategoryFromServer(token);
diff --git a/lib/redux/store.dart b/lib/redux/store.dart
index 1c34fdf..8519399 100644
--- a/lib/redux/store.dart
+++ b/lib/redux/store.dart
@@ -70,7 +70,6 @@ class AppState {
   }
 
   static AppState fromJson(dynamic json){
-    print(json);
     return json !=null
         ? AppState(
           settingState: SettingState.fromJson(json['settingState']),