Update app.py

app.py

@@ -3,13 +3,16 @@ import json
 import gradio as gr
 import os
 
+from llama_index import set_global_service_context
+set_global_service_context(service_context)
+
 # retrieve secret key from HF settings
 #openai.api_key = os.getenv("OPENAI_API_KEY")
 
 # rebuild storage context and load knowledge index
 from llama_index import StorageContext, load_index_from_storage
-storage_context = StorageContext.from_defaults('./index/')
-index = load_index_from_storage(storage_context, service_context=service_context)
+storage_context = StorageContext.from_defaults(persist_dir='./index/')
+index = load_index_from_storage(storage_context)
 
 class Chatbot:
     def __init__(self, api_key, index):