jqz1226老师，把策略放在一创聚宽（PY2）下编译，出现错误，如何修改？盼望指导：
Traceback (most recent call last):
File "jqboson/core/entry.py", line 368, in _run
engine.start()
File "jqboson/core/engine.py", line 230, in start
self._dispatcher.start()
File "jqboson/core/dispatcher.py", line 223, in start
self._run_loop()
File "jqboson/core/dispatcher.py", line 190, in _run_loop
self._loop.run()
File "jqboson/core/loop/loop.py", line 73, in run
self._handle_queue()
File "jqboson/core/loop/loop.py", line 105, in _handle_queue
message.callback(**message.callback_data)
File "jqboson/core/dispatcher.py", line 103, in callback
self._event_bus.emit(evt)
File "jqboson/core/bus.py", line 47, in emit
ret.append(call(event))
File "jqboson/core/strategy.py", line 301, in _wrapper
return cb(self._context.strategy_environment.strategy_context)
File "user_code.py", line 85, in trade
close = get_bars(code1, count=120, unit='1d', include_now=True, fields=['close'])['close']
File "jqboson/api/data.py", line 132, in get_bars
raise UserError('security 必须是字符串 或者 字符串数组')
UserError: security 必须是字符串 或者 字符串数组
雪球
