diff --git a/debug.txt b/debug.txt
index e700b38..8cf10a2 100644
--- a/debug.txt
+++ b/debug.txt
@@ -1,12 +1,27 @@
-Look at line 354: `if (req.user.role !== 'super_admin' && rows[0].tenant_id !== req.user.tenant_id) {`
-What if `req.user.tenant_id` is null (which it is for some system admins)?
-But `rows[0].tenant_id` could be something else. That just returns 403.
-What if `rows` is empty?
-Line 353: `if (rows.length === 0) return res.status(404).json({ error: 'Not found' });`
-What if `req.user` is undefined? (Should be caught by middleware).
+Look at `playNotificationSound`:
+```javascript
+ const playNotificationSound = () => {
+ if (currentUser?.sound_enabled !== false && audioRef.current) {
+ // Reset time to 0 to allow rapid replays
+ audioRef.current.currentTime = 0;
+ const playPromise = audioRef.current.play();
+```
+Is `currentUser` loaded when `loadNotifications` fires for the first time after `isInitialLoadRef` is false?
+Yes, `useEffect` calls `fetchCurrentUser()`, which sets `currentUser`.
-Wait, the user says the error is:
-`https://fasto.blyzer.com.br/api/users/u_71657ec7`
-And it returns `500`.
+Wait. `setInterval` uses a closure over the state!
+```javascript
+ useEffect(() => {
+ fetchCurrentUser();
+ loadNotifications();
+ const interval = setInterval(loadNotifications, 10000);
+ return () => clearInterval(interval);
+ }, [navigate]);
+```
+Oh my god. The `setInterval` callback `loadNotifications` captures the *initial* state variables, including `currentUser`, which is `null` on the first render!
+If `currentUser` is `null` inside the closure, `currentUser?.sound_enabled !== false` evaluates to `true !== false` which is `true`. So that's not blocking it.
+BUT `audioRef.current` might not have been rendered yet? No, `audioRef` is a ref, so it mutates in place. The closure always sees the latest `audioRef.current`.
-Let's log the exact error inside the catch block in the backend.
+So why does it fail or not play?
+Is the browser policy blocking it silently without logging?
+Let's add a robust, standalone Audio approach that doesn't rely on the DOM tag if it fails, or maybe just force a click handler to "unlock" the audio context.
diff --git a/public/audio/notification.mp3 b/public/audio/notification.mp3
deleted file mode 100644
index 321a551..0000000
--- a/public/audio/notification.mp3
+++ /dev/null
@@ -1,9 +0,0 @@
-
-
-404 Not Found
-
-Not Found
-The requested URL was not found on this server.
-Additionally, a 404 Not Found
-error was encountered while trying to use an ErrorDocument to handle the request.
-
diff --git a/src/assets/audio/notification.mp3 b/src/assets/audio/notification.mp3
index de51d68..e6e2336 100644
Binary files a/src/assets/audio/notification.mp3 and b/src/assets/audio/notification.mp3 differ