Update preprocessing_router.py

preprocessing_router.py

@@ -296,7 +296,7 @@ async def finalize_casting(
         n_voices = 0
 
     face_identities = sorted([p.name for p in faces_out.iterdir() if p.is_dir()]) if faces_out.exists() else []
-    voice_identities = sorted([p.name for p in voices_out.iterdir() if p.is_dir()]) if voices_out.exists() else 
+    voice_identities = sorted([p.name for p in voices_out.iterdir() if p.is_dir()]) if voices_out.exists() else []
 
     print("faces_out exists:", faces_out.exists())
     print("voice_out exists:", voices_out.exists())