macaca+python 获取元素大小报错webelement.size ，rect也报错
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[待解决问题]
获取元素大小报错
webelement.size
webelement.rect 也报错
部分报错信息如下：
if http_error_msg:
> raise HTTPError(http_error_msg, response=self)
E requests.exceptions.HTTPError: 404 Client Error: Not Found for url: http://localhost:3456/wd/hub/session/c2078c20-c8f1-48d8-84f3-5023e340a653/element/0.9202883099329582-3/size
c:\python36\lib\site-packages\requests\models.py:935: HTTPError
