load videoprefix on login

lib/navigation/settings_screen.dart

@@ -1,10 +1,10 @@
 import 'package:flutter/material.dart';
-import 'package:openmediacentermobile/utils/FileFormatter.dart';
+import 'package:openmediacentermobile/utils/file_formatter.dart';
 
 import '../api/token.dart';
 import '../db/database.dart';
 import '../drawer/my_drawer.dart';
-import '../login/logincontext.dart';
+import '../login/login_context.dart';
 
 class SettingsScreen extends StatefulWidget {
   const SettingsScreen({Key? key}) : super(key: key);
@@ -47,7 +47,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
             ElevatedButton(
                 onPressed: () {
                   loginCtx.onLoggin(false);
-                  Token.getInstance().setToken("", "");
+                  Token.getInstance().setToken("", "", "");
                   Db().clear();
                 },
                 child: Text("Logout"))