diff --git a/loc_chain_app/lib/main.dart b/loc_chain_app/lib/main.dart
index 028ca0f..1b1e62b 100644
--- a/loc_chain_app/lib/main.dart
+++ b/loc_chain_app/lib/main.dart
@@ -4,13 +4,12 @@ import 'package:loc_chain_app/widgets/navbar.dart';
 import 'dart:math';
 
 void main() async {
+  runApp(App());
   final prefs = await SharedPreferences.getInstance();
   final id = prefs.getString('id') ?? '0';
   if (id == '0') {
     prefs.setString('id', Random().nextInt(10000).toString());
   }
-
-  runApp(App());
 }
 
 class App extends StatelessWidget {
diff --git a/loc_chain_app/lib/pages/settings.dart b/loc_chain_app/lib/pages/settings.dart
index 31fe246..16e561f 100644
--- a/loc_chain_app/lib/pages/settings.dart
+++ b/loc_chain_app/lib/pages/settings.dart
@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:nearby_connections/nearby_connections.dart';
 
 class SettingsPage extends StatefulWidget {
-  SettingsPage({Key key, this.title}) : super(key: key);
+  SettingsPage({Key? key, required this.title}) : super(key: key);
   final String title;
 
   @override
diff --git a/loc_chain_app/pubspec.lock b/loc_chain_app/pubspec.lock
index b6a0549..3820a3a 100644
--- a/loc_chain_app/pubspec.lock
+++ b/loc_chain_app/pubspec.lock
@@ -191,13 +191,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "4.2.1"
-  rsa_encrypt:
-    dependency: "direct main"
+  protobuf:
+    dependency: transitive
     description:
-      name: plugin_platform_interface
+      name: protobuf
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
+    version: "2.0.0"
   shared_preferences:
     dependency: "direct main"
     description: