Update app.py

app.py

@@ -370,8 +370,9 @@ llm = HuggingFaceEndpoint(
     timeout=10
 )
 from langchain.memory import ConversationBufferWindowMemory
+from langchain.memory import ChatMessageHistory
 
-llm_chain = LLMChain(prompt=prompt, llm=llm, memory=ConversationBufferWindowMemory(k=20))
+llm_chain = LLMChain(prompt=prompt, llm=llm, memory=ChatMessageHistory())
 
 agent_tools = [ipc_tool, crpc_tool, doj_tool, faq_tool]