add traceback

app.py

@@ -24,6 +24,7 @@ import pandas as pd
 import torch
 from datasets import Dataset
 from PIL import Image
+import traceback
 
 from inference import (
     load_curia_dataset,
@@ -453,7 +454,8 @@ def run_inference(
         result_text = f"**Prediction:** {prediction}"
         return result_text, df
     except Exception as exc:  # pragma: no cover - surfaced in UI
-        return f"Failed to run inference: {exc}", pd.DataFrame()
+        traceback.print_exc()
+        return f"Failed to run inference: {exc}", gr.update(visible=False)
 
 
 def handle_upload_preview(