Update app.py

app.py

@@ -111,8 +111,9 @@ def submit_message(prompt, prompt_template, temperature, max_tokens, context_len
         #query = str(system_prompt + history[-context_length*2:] +  [prompt_msg])
         #completion = completion.run(query)
         # from https://blog.devgenius.io/chat-with-document-s-using-openai-chatgpt-api-and-text-embedding-6a0ce3dc8bc8
-
-        completion = RetrievalQA.from_chain_type(llm=ChatOpenAI(temperature=temperature, max_tokens=max_tokens, model_name="gpt-3.5-turbo"), chain_type="stuff", retriever=vectordb.as_retriever(), return_source_documents=True)
+        completion_chain = load_qa_chain(ChatOpenAI(temperature=temperature, max_tokens=max_tokens, model_name="gpt-3.5-turbo"), chain_type="stuff" )
+        completion = RetrievalQA(combine_documents_chain=completion_chain, retriever=vectordb.as_retriever(), return_source_documents=True)
+        #completion = RetrievalQA.from_chain_type(llm=ChatOpenAI(temperature=temperature, max_tokens=max_tokens, model_name="gpt-3.5-turbo"), chain_type="stuff", retriever=vectordb.as_retriever(), return_source_documents=True)
         query = str(system_prompt + history[-context_length*2:] +  [prompt_msg])
         completion = completion({"query": query})
         logger.info(completion["result"])