AirtestIDE ios unity 报错

描述问题bug
AirtestIDE ios unity 报错
File "airtest\cli\runner.py", line 65, in runTest
File "site-packages\six.py", line 693, in reraise
File "airtest\cli\runner.py", line 61, in runTest
File "C:\Users\xunjunbo\AppData\Local\Temp\AirtestIDE\Scripts\untitled.air\untitled.py", line 13, in
poco = UnityPoco(device=current_device())
File "D:\tools\AirtestIDE_2019-05-09_py3_win64\poco\drivers\unity3d\unity3d_poco.py", line 80, in __init__
super(UnityPoco, self).__init__(addr[1], dev, **options)
File "D:\tools\AirtestIDE_2019-05-09_py3_win64\poco\drivers\std\__init__.py", line 99, in __init__
local_port, _ = self.device.instruct_helper.setup_proxy(port)
File "airtest\utils\retry.py", line 46, in f2
File "D:\tools\AirtestIDE_2019-05-09_py3_win64\airtest\core\ios\instruct_helper.py", line 40, in setup_proxy
self.do_proxy(local_port, remote_port)
File "D:\tools\AirtestIDE_2019-05-09_py3_win64\airtest\core\ios\instruct_helper.py", line 58, in do_proxy
stderr=subprocess.PIPE
File "subprocess.py", line 729, in __init__
File "subprocess.py", line 1017, in _execute_child

**相关截图**


**python 版本:** `python3.6`

**airtest 版本:** `1.0.27`
> airtest版本通过`pip freeze`可以命令可以查到

**设备:**
- 型号: [iphone x]
- 系统: [12.4]
_xcode :10.3
-windows 7
- (别的信息)

**其他相关环境信息**
(其他运行环境，例如在linux ubuntu16.04上运行异常，在windows上正常。)