upgrade gradle

lib/pages/main/model/main_model.dart

@@ -9,7 +9,7 @@ import 'package:fcs/helpers/shared_pref.dart';
 import 'package:fcs/pages/main/model/base_model.dart';
 import 'package:flutter/foundation.dart';
 import 'package:logging/logging.dart';
-import 'package:package_info/package_info.dart';
+import 'package:package_info_plus/package_info_plus.dart';
 
 class MainModel extends ChangeNotifier {
   final log = Logger('MainModel');
@@ -36,7 +36,7 @@ class MainModel extends ChangeNotifier {
 
   MainModel() {
     NetworkConnectivity.instance.statusStream.listen((data) {
-      bool _isOnline = data["isOnline"];
+      bool _isOnline = data != ConnectivityStatus.none;
       if (_isOnline && !this.isOnline) {
         _init();
       }