Update app.py

app.py

@@ -162,7 +162,7 @@ def process_audio_separation(task_id, mp3_url):
     except Exception as e:
         tasks[task_id] = {
             "status": "error",
-            "message": str(e)
+            "message": str(e),
             "debug_traceback": str(traceback.format_exception(exc_type, exc_value, exc_traceback))
         }