diff --git a/app/static/js/services/bridgeAudioNode.js b/app/static/js/services/bridgeAudioNode.js
index a54d029..f4fa443 100644
--- a/app/static/js/services/bridgeAudioNode.js
+++ b/app/static/js/services/bridgeAudioNode.js
@@ -17,6 +17,7 @@
   var _initialized = false;
   var _frames = 0;
   var _peak = 0;
+  var _lastDiag = 0;
   var _useWorklet = false;
   var _dest = null; // destination gain node da noi (chong connect trung)
 
diff --git a/app/templates/index.html b/app/templates/index.html
index d184572..35eb0a0 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -40,7 +40,7 @@
     <script src="/static/js/services/soundfontStorage.js?v=202607271016"></script>
     <script src="/static/js/services/soundfontPlayer.js?v=202608101800"></script>
     <script src="/static/js/services/nativeBridgeService.js?v=202608250200"></script>
-    <script src="/static/js/services/bridgeAudioNode.js?v=202608250400"></script>
+    <script src="/static/js/services/bridgeAudioNode.js?v=202608250500"></script>
     <script src="/static/js/services/unifiedMidiRouter.js?v=202608250054"></script>
     <script src="/static/js/services/audioRoutingEngine.js?v=202608250107"></script>
     <script src="/static/js/services/aiGateway.js?v=202608037200"></script>