Update app.py

app.py

@@ -1,9 +1,8 @@
 from dotenv import load_dotenv
 import os
-
 from langchain_openai import ChatOpenAI, OpenAIEmbeddings
 from langchain_astradb import AstraDBVectorStore
-from langchain.agents import create_tool_calling_agent
+from langchain.agents import initialize_agent, AgentType
 from langchain.tools.retriever import create_retriever_tool
 from langchain.agents import AgentExecutor
 from github import fetch_github_issues
@@ -61,8 +60,8 @@ prompt = hub.pull("hwchase17/openai-functions_agent")
 llm = ChatOpenAI()
 
 tools = [retriever_tool], note_tool
-agent = create_tool_calling_agent(llm, tools, prompt)
-agent_executor = AgentExecutor(agent=agent, tools=tools, verbose=True)
+agent = initialize_agent(llm, tools, prompt)
+agent_executor = AgentExecutor(agent=AgentType.OPENAI_FUNCTIONS, tools=tools, verbose=True)
 
 def answer_question(question):
     """Function to process user question and return agent response"""