fix

lib/questionscreen.dart

@@ -242,7 +242,8 @@ class _QuestionScreenState extends State<QuestionScreen> {
 
   void _startBonusQuestion() {
     _maxAcceleration = 0.0;
-    _accelerometerSubscription = accelerometerEventsStream.listen((event) {
+    // ignore: deprecated_member_use
+    _accelerometerSubscription = accelerometerEvents.listen((event) {
       final acceleration = event.x * event.x + event.y * event.y + event.z * event.z;
       if (acceleration > _maxAcceleration) {
         setState(() {