Update app.py

app.py

@@ -91,7 +91,7 @@ async def rollback_last(
         }
     ):
         ppm.append_pong(result)
-        yield "", prompt, ppm.build_uis(), str(res)
+        yield "", prompt, ppm.build_uis(), str(res), gr.update(interactive=False)
         
     yield "", prompt, ppm.build_uis(), str(res), gr.update(interactive=True)
 
@@ -135,7 +135,7 @@ async def chat_stream(
         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=True)
+    yield "", prompt, ppm.build_uis(), str(res), gr.update(interactive=True)
 
 def channel_num(btn_title):
     choice = 0