update dependency

app.py

@@ -10,6 +10,7 @@ from langchain.chat_models import AzureChatOpenAI
 from langchain.document_loaders import DirectoryLoader
 from langchain.chains import RetrievalQA  
 from langchain.vectorstores import Pinecone
+# from langchain.vectorstores.pinecone import Pinecone
 from langchain.agents import initialize_agent
 from langchain.agents import AgentType
 from langchain.agents import Tool
@@ -31,7 +32,8 @@ from langchain.schema.messages import (
     FunctionMessage,
     SystemMessage,
 )
-from langchain import LLMChain
+# from langchain import LLMChain
+from langchain.chains import LLMChain
 import azure.cognitiveservices.speech as speechsdk
 import requests