Update app.py

app.py

@@ -83,7 +83,7 @@ def main():
 
         if query:
             docs = VectorStore.similarity_search(query=query, k=3)
-            llm = HuggingFaceHub(repo_id='OpenAssistant/oasst-sft-1-pythia-12b',
+            llm = HuggingFaceHub(repo_id='google/flan-ul2',
                                  huggingfacehub_api_token='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', model_kwargs={"temperature": 0.1, "max_new_tokens": 500})
             # llm = OpenAI()
             chain = load_qa_chain(llm=llm, chain_type="stuff")