llm update

model.py

@@ -75,7 +75,7 @@ QA_PROMPT = PromptTemplate(input_variables=["context", "question"],template=qa_t
 from langchain.chains import RetrievalQA
 
 Web_qa = RetrievalQA.from_chain_type(
-    llm=llm_OpenAi,
+    llm=llm,
     chain_type="stuff",
     retriever = vectorstore.as_retriever(search_kwargs={"k": 4}),
     return_source_documents= True,