Update app.py

app.py

@@ -50,6 +50,7 @@ def invoke(openai_api_key, use_rag, prompt):
     try:
         llm = ChatOpenAI(model_name = MODEL_NAME, 
                          openai_api_key = openai_api_key, 
+                         streaming = True, 
                          temperature = 0)
         if (use_rag):
             # Document loading