Update app.py

app.py

@@ -120,7 +120,7 @@ def step3_normals(state):
     return "✅ Step 3: Normals inference complete", video, state
 
 # Step 4: UV map inference → uv map video
-@space.GPU()
+@spaces.GPU()
 def step4_uv_map(state):
     session_id = state["session_id"]
     base_dir = state["base_dir"]