Update app.py

app.py

@@ -63,6 +63,8 @@ def main():
                             max_new_tokens=512,
                             temperature=0.1)
 
+        llm = CTransformers(model="meta-llama/Llama-2-7b-chat-hf")
+
         qa = ConversationalRetrievalChain.from_llm(llm, retriever=docsearch.as_retriever())
 
         st.write("Enter your query:")