Update app.py

app.py

@@ -121,7 +121,7 @@ def _launch_demo(args, model, tokenizer):
             if isinstance(item, tuple) and len(item) == 2:
                 processed_history.append(item)
             else:
-                print("Invalid history item:", item) 
+                print("Invalid history item:", item)
         history = process_history_for_model(processed_history)
         response, history = model.chat(tokenizer, query=query, history=history)
         image = tokenizer.draw_bbox_on_latest_picture(response, history)