Update app.py

app.py

@@ -4,6 +4,7 @@ from flask import Flask, render_template, request, jsonify
 from rss_processor import fetch_rss_feeds, process_and_store_articles, download_from_hf_hub, upload_to_hf_hub, clean_text, LOCAL_DB_DIR
 import logging
 import time
+import json
 from datetime import datetime
 import hashlib
 from langchain.vectorstores import Chroma