Update app.py

app.py

@@ -58,7 +58,7 @@ def main():
         docsearch = FAISS.from_documents(text_chunks, embeddings)
         docsearch.save_local(DB_FAISS_PATH)
 
-        llm = CTransformers(model="models/llama-2-7b-chat.ggmlv3.q4_0.bin",
+        llm = CTransformers(model="meta-llama/Llama-2-7b-chat-hf",
                             model_type="llama",
                             max_new_tokens=512,
                             temperature=0.1)