Update app.py

app.py

@@ -42,7 +42,11 @@ def update_news():
         db_read = DBRead()
         db_write = DBWrite()
         old_news = db_read.read_news_from_db()
+        if old_news is None:
+            logger.warning('No old news Found')
         new_news = get_news()
+        if new_news is None:
+            raise Exception('No news news Found')
         news_df = predict_news_category(old_news, new_news, interpreter, label_encoder, tokenizer)
         news_json = [*json.loads(news_df.reset_index(drop=True).to_json(orient="index")).values()]
         db_write.insert_news_into_db(news_json)