Update app.py

app.py

@@ -3,6 +3,8 @@ import yfinance as yf
 from prophet import Prophet
 import plotly.express as px
 from datetime import datetime
+import plotly.graph_objects as go
+
 
 def download_data(ticker, start_date='2010-01-01'):
     """ 데이터를 다운로드하고 적절히 포맷팅하는 함수 """