修复Langchain插件的bug

crazy_functions/Langchain知识库.py

@@ -30,7 +30,7 @@ def 知识库问答(txt, llm_kwargs, plugin_kwargs, chatbot, history, system_pro
         )
         yield from update_ui(chatbot=chatbot, history=history) # 刷新界面
         from .crazy_utils import try_install_deps
-        try_install_deps(['zh_langchain==0.2.0'])
+        try_install_deps(['zh_langchain==0.2.1'])
     
     # < --------------------读取参数--------------- >
     if ("advanced_arg" in plugin_kwargs) and (plugin_kwargs["advanced_arg"] == ""): plugin_kwargs.pop("advanced_arg")
@@ -84,7 +84,7 @@ def 读取知识库作答(txt, llm_kwargs, plugin_kwargs, chatbot, history, syst
         chatbot.append(["依赖不足", "导入依赖失败。正在尝试自动安装，请查看终端的输出或耐心等待..."])
         yield from update_ui(chatbot=chatbot, history=history) # 刷新界面
         from .crazy_utils import try_install_deps
-        try_install_deps(['zh_langchain==0.2.0'])
+        try_install_deps(['zh_langchain==0.2.1'])
 
     # < -------------------  --------------- >
     kai = knowledge_archive_interface()