diff --git a/Sources/dafl_project_flutter/lib/controller/controller.dart b/Sources/dafl_project_flutter/lib/controller/controller.dart
index 9361fec..5afd378 100644
--- a/Sources/dafl_project_flutter/lib/controller/controller.dart
+++ b/Sources/dafl_project_flutter/lib/controller/controller.dart
@@ -1,3 +1,5 @@
+import 'dart:async';
+import 'dart:collection';
 import 'dart:convert';
 import 'package:dafl_project_flutter/controller/live_datas.dart';
 import 'package:dafl_project_flutter/model/music.dart';
@@ -17,7 +19,7 @@ class Controller {
 
   late BuildContext navigatorKey;
 
-  Controller(){
+  Controller() {
     setSpots();
     Timer.periodic(const Duration(seconds: 10), (Timer t) => setSpots());
   }
@@ -140,4 +142,4 @@ class Controller {
       }),
     );
   }
-}
\ No newline at end of file
+}