Update app.py

app.py

@@ -24,7 +24,7 @@ def construct_index(directory_path):
     temperature = 0.1
 
     prompt_helper = PromptHelper(max_input_size, num_outputs, max_chunk_overlap, chunk_size_limit=chunk_size_limit)
-    llm_predictor = LLMPredictor(llm=ChatOpenAI(temperature=temperature, model_name="gpt-3.5-turbo", max_tokens=num_outputs))
+    llm_predictor = LLMPredictor(llm=ChatOpenAI(temperature=temperature, model_name="gpt-3.5-turbo-instruct", max_tokens=num_outputs))
     documents = SimpleDirectoryReader(directory_path).load_data()
     #index = GPTVectorStoreIndex(documents, llm_predictor=llm_predictor, prompt_helper=prompt_helper)
     index = GPTVectorStoreIndex.from_documents(documents, urls=[