Update app.py

app.py

@@ -19,8 +19,8 @@ def get_data():
         response = requests.get('https://api.coinex.com/v1/market/kline/BTCUSDT', params=params)
         data = response.json()
         df = pd.DataFrame(data['data'])
-        df['date'] = pd.to_datetime(df['date'], unit='ms')  # Replace 'time' with 'date'
-        df.set_index('date', inplace=True)
+        df['open_time'] = pd.to_datetime(df['open_time'], unit='ms')  # Replace 'date' with 'open_time'
+        df.set_index('open_time', inplace=True)
         df.drop(['vol', 'amount'], axis=1, inplace=True)
         df_list.append(df)