Update app.py

app.py

@@ -588,7 +588,7 @@ def display_file_manager_sidebar(groups, sorted_prefixes):
 # 🎯 11. Main Application
 async def get_available_voices():
     voices = await edge_tts.list_voices()
-    return [voice["shortName"] for voice in voices]
+    return [voice["ShortName"] for voice in voices]
 
 @st.cache_resource
 def fetch_voices():