fix bug

app.py

@@ -1,6 +1,6 @@
 import os
-os.system("pip install 'https://modelscope-studios.oss-cn-zhangjiakou.aliyuncs.com/SDK/gradio/gradio-4.44.0-py3-none-any.whl?OSSAccessKeyId=LTAI5tCGZWFdkWKivGKCtvTD&Expires=361727611665&Signature=iynlOFVFiaF3OmxatNMHUBPfb3o%3D'")
-os.system("pip install starlette==0.38.6 fastapi==0.112.4")
+# os.system("pip install 'https://modelscope-studios.oss-cn-zhangjiakou.aliyuncs.com/SDK/gradio/gradio-4.44.0-py3-none-any.whl?OSSAccessKeyId=LTAI5tCGZWFdkWKivGKCtvTD&Expires=361727611665&Signature=iynlOFVFiaF3OmxatNMHUBPfb3o%3D'")
+# os.system("pip install starlette==0.38.6 fastapi==0.112.4")
 
 from typing import List, Tuple, Union
 from web_ui import WebUI

web_ui.py

@@ -189,8 +189,8 @@ class WebUI:
                 else:
                     input_promise = input_promise.then(
                         self.agent_run,
-                        [chatbot, history],
-                        [chatbot, history],
+                        [chatbot, history, agent_selector],
+                        [chatbot, history, agent_selector],
                     )
 
                 input_promise.then(self.flushed, None, [input, agent_selector])