Update app.py

app.py

@@ -8,7 +8,7 @@ Outputs include scene blueprint, structured JSON, and downloadable results.
 
 import time
 import logging
-
+import traceback
 
 import gradio as gr
 from PIL import Image
@@ -183,6 +183,7 @@ def handle(mode, media_upload, url,
                 None
             )
         except Exception as e:
+            traceback.print_exc()
             logger.error(f"Image processing failed: {e}")
             return (
                 gr.update(visible=False),