Update app.py

app.py

@@ -26,8 +26,8 @@ from llama_index.llms.openai import OpenAI
 from datetime import datetime;
 import socket;
 
-# access data stored in datasets
-from datasets import load_dataset
+# access /data folder of persistent storage
+from pathlib import Path
 
 # deprecated
 storage_context = StorageContext.from_defaults(persist_dir='./')
@@ -42,8 +42,9 @@ class Chatbot:
         self.index = index
         openai.api_key = api_key
         self.chat_history = []
-        #self.history_file = f"zlmqi/index/chat_log.json"
-        self.history_file = load_dataset("json", data_files="zlmqi/index/chat_log.json")
+
+        # access chat log file in /data folder (persistent storage)
+        self.history_file = f"/data/chat_log.json"
  
     def generate_response(self, user_input):
         query_engine = index.as_query_engine(llm=llm_predictor)