Update app.py

app.py

@@ -2,6 +2,7 @@ import streamlit as st
 from PyPDF2 import PdfReader
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 import os
+from langchain.chain import LLMChain
 from langchain_google_genai import GoogleGenerativeAIEmbeddings
 from langchain.llms import HuggingFaceHub
 from langchain.embeddings import HuggingFaceInferenceAPIEmbeddings
@@ -48,7 +49,7 @@ def get_conversational_chain():
     model = HuggingFaceHub(repo_id="google/gemma-1.1-7b-it",
                             model_kwargs={"temperature": 0.2,"max_new_tokens":512})
     prompt = PromptTemplate(template=prompt_template, input_variables=["context", "question"])
-    chain = load_qa_chain(model, chain_type="stuff", prompt=prompt)
+    chain = LLMChain(llm=model, chain_type="stuff", prompt=prompt)
     return chain
 
 def user_input(user_question):