Update app.py

app.py

@@ -73,7 +73,7 @@ def fetch_data(symbol='ETHUSDT', interval='1h', start_date='2021-01-01'):
             print("Fetched data successfully.")
             print(data)
         klines += data
-       start_date = datetime.fromtimestamp(data[-1][6] / 1000, timezone.utc) + timedelta(milliseconds=1)
+        start_date = datetime.fromtimestamp(data[-1][6] / 1000, timezone.utc) + timedelta(milliseconds=1)
     
     df = pd.DataFrame(klines, columns=['timestamp', 'Open', 'High', 'Low', 'Close', 'Volume', 'Close_time', 'Quote_asset_volume', 'Number_of_trades', 'Taker_buy_base_asset_volume', 'Taker_buy_quote_asset_volume', 'Ignore'])
     df['Close'] = df['Close'].astype(float)