Update app.py

app.py

@@ -91,9 +91,9 @@ async def rollback_last(
         }
     ):
         ppm.append_pong(result)
-        yield "", prompt, ppm.build_uis(), str(res), gr.update(interactive=False)
+        yield prompt, ppm.build_uis(), str(res), gr.update(interactive=False)
         
-    yield "", prompt, ppm.build_uis(), str(res), gr.update(interactive=True)
+    yield prompt, ppm.build_uis(), str(res), gr.update(interactive=True)
 
 def reset_chat(idx, ld, state):
     res = [state["ppmanager_type"].from_json(json.dumps(ppm_str)) for ppm_str in ld]