Update app.py

app.py

@@ -93,7 +93,10 @@ tokenizer = AutoTokenizer.from_pretrained(llm_model)
 #question = "How can I reverse diabetes?"
 
 #pipe = pipeline(model = llm_model, tokenizer = tokenizer, task = "text-generation", temperature=0.2)
-load_qa_chain(llm=llm_model,tokenizer =tokenizer, chain_type="map_reduce")
+
+from langchain.chains.question_answering import load_qa_chain
+
+pipe = load_qa_chain(llm=llm_model,tokenizer =tokenizer, chain_type="map_reduce")
 print("check2")
 qa = ConversationalRetrievalChain.from_llm(
     pipe,