为什么引用了api.wait_update()或者api.register_update_notify()后，k线和行情能正常实时更新，但是基于k线或者quote行情的技术指标却不能随着行情实时更新了

#同样的代码之前这样写技术指标绘图都能正常更新的，为什么这几天就不能了
from tqsdk import TqApi, TqAuth
from tqsdk.ta import *
api =TqApi(auth=TqAuth('账号','密码'),web_gui = True)
symbol='CZCE.TA301'
    while True:
        klines = api.get_kline_serial(symbol, 60, 500)
        dma = DMA(klines, 10, 50, 10)
        # 在副图上显示DMA
        klines['ddd'] = dma.ddd
        klines['ddd.board'] = 'B2'
        klines['ddd.color'] = 'green'
        klines['ama'] = dma.ama
        klines['ama.board'] = 'B2'
        klines['ama.color'] = 'red'
        # 均线MA
        ma5 = MA(klines, 5)
        ma10 = MA(klines, 10)
        ma20 = MA(klines, 20)
        ma40 = MA(klines, 40)
        ma60 = MA(klines, 60)
        klines['ma5'] = ma5
        klines['ma5.color'] = 'red'
        klines['ma10'] = ma10
        klines['ma10.color'] = 'blue'
        klines['ma20'] = ma20
        klines['ma20.color'] = 'green'
        klines['ma40'] = ma40
        klines['ma40.color'] = '#FF00FF'
        klines['ma60'] = ma60
        klines['ma60.color'] = 'gray'
        api.wait_update()       #更新行情数据
<img src="https://www.shinnytech.com/wp-content/uploads/anspress-temp/e3e4581a114963ab95183083f800639fa707f744_4857.png" />