错单：该交易席位未连接到交易所，麻烦帮说明一下这种异常的原因

实盘 simnow 账号，今天早上遇到的，出异常之后就退出了，然后我设置的自动重启，重启多次还是依旧出现这个问题。但是用快期3手动下单是没问题的.

大概持续时间是 09:06:24 到 09:09:17 左右，请问发生这种错单的原因是什么？（主要没看懂什么叫交易席位未连接到交易所）

在使用天勤量化之前，默认您已经知晓并同意以下免责条款，如果不同意请立即停止使用：https://www.shinnytech.com/blog/disclaimer/
2020-08-14 09:07:41,234 – INFO – 您可以访问 http://127.0.0.1:50011 查看策略绘制出的 K 线图形。
2020-08-14 09:07:47,748 – INFO – 通知: 与 wss://openmd.shinnytech.com/t/md/front/mobile 的网络连接已建立
2020-08-14 09:07:47,751 – INFO – 通知: 与 wss://otg-sim.shinnytech.com/trade 的网络连接已建立
2020-08-14 09:07:47,754 – INFO – 通知: 登录成功
modules [<strategies.break_strategy.BreakStrategy object at 0xb6693a30>, <risks.opening.OpeningRisk object at 0xb2b70db0>, <risks.clearing.ClearingRisk object at 0xb0013f10>, <risks.holding.HoldingRisk object at 0xaffe60f0>, <risks.profiting.ProfitingRisk object at 0xaffe68f0>, <monitor.trade.TradeMonitor object at 0xb00258d0>, <monitor.position.PositionMonitor object at 0xaff565b0>] loaded
Traceback (most recent call last):
File “/home/pi/live-trading/bootstrap.py”, line 101, in <module>
api.wait_update(deadline)
File “/home/pi/live-trading/venv/lib/python3.7/site-packages/tqsdk/api.py”, line 942, in wait_update
self._run_until_idle()
File “/home/pi/live-trading/venv/lib/python3.7/site-packages/tqsdk/api.py”, line 1643, in _run_until_idle
self._run_once()
File “/home/pi/live-trading/venv/lib/python3.7/site-packages/tqsdk/api.py”, line 1636, in _run_once
raise self._exceptions.pop(0)
File “/home/pi/live-trading/venv/lib/python3.7/site-packages/tqsdk/lib.py”, line 208, in _target_pos_task
await gather(*[each._task for each in all_tasks])
File “/home/pi/live-trading/venv/lib/python3.7/site-packages/tqsdk/lib.py”, line 289, in _run
self._symbol, self._direction, self._offset, self._volume, limit_price, order.last_msg))
Exception: 遇到错单: CZCE.SR009 BUY OPEN 1手 5096.000000 CTP:该交易席位未连接到交易所