Traceback (most recent call last):
File "C:\veighna_studio\lib\threading.py", line 1016, in _bootstrap_inner
self.run()
File "C:\veighna_studio\lib\threading.py", line 953, in run
self._target(self._args, **self._kwargs)
File "C:\veighna_studio\lib\site-packages\vnpy\event\engine.py", line 60, in _run
self._process(event)
File "C:\veighna_studio\lib\site-packages\vnpy\event\engine.py", line 73, in _process
[handler(event) for handler in self._handlers[event.type]]
File "C:\veighna_studio\lib\site-packages\vnpy\event\engine.py", line 73, in <listcomp>
[handler(event) for handler in self._handlers[event.type]]
File "C:\veighna_studio\lib\site-packages\vnpy_spreadtrading\engine.py", line 483, in process_trade_event
algo.update_trade(trade)
File "C:\veighna_studio\lib\site-packages\vnpy_spreadtrading\template.py", line 175, in update_trade
self.calculate_traded_price()
File "C:\veighna_studio\lib\site-packages\vnpy_spreadtrading\template.py", line 373, in calculate_traded_price
self.traded_price = round_to(self.traded_price, spread.pricetick)
File "C:\veighna_studio\lib\site-packages\vnpy\trader\utility.py", line 133, in round_to
rounded: float = float(int(round(value / target)) target)
decimal.DivisionByZero: [<class 'decimal.DivisionByZero'>] 这是错误触发反馈，不知是round_to函数没有处理好，还是simnow环境的推送不完整造成的

这个问题应该是在simnow环境下，推送数据不及时或不完整。同时，SpreadData模块在pricetick取值这一块鲁棒性不足，没有考虑数据质量的问题。初始值=0 + 取min 是有漏洞的，导致最终出现spreadtick = 0的问题。不知是否如此？？还望大神指点。 这个问题不解决，那这个价差策略就只能在分钟或更大级别使用（出问题的概率低），而不能在tick级别使用。