demo无法运行，游戏已经拉起，但无法运行demo

[NickyWu123]

wutianyang$ python sample.py
2018-03-21 16:57:47,722 - INFO - manager.py:104 - wpyscripts.manager - None
2018-03-21 16:57:47,722 - INFO - manager.py:106 - wpyscripts.manager - host: 127.0.0.1 port: 53001

2018-03-21 16:57:47,756 - DEBUG - uiautomator_manager.py:35 - wetest - Start UIAutomator
2018-03-21 16:57:50,764 - DEBUG - uiautomator_manager.py:38 - wetest - Exit uiautomator
Traceback (most recent call last):
File "sample.py", line 196, in
main()
File "sample.py", line 190, in main
test_interaction()
File "sample.py", line 33, in wrapped
enter = engine.find_element(button)
File "/Users/wutianyang/Desktop/GAutomator-master/wpyscripts/wetest/engine.py", line 155, in find_element
ret = self.socket.send_command(Commands.FIND_ELEMENTS, [name])
File "/Users/wutianyang/Desktop/GAutomator-master/wpyscripts/common/socket_client.py", line 111, in send_command
raise e
wpyscripts.common.wetest_exceptions.WeTestSDKError: recv length is None?

模拟器是genymotion，在模拟器打开了demo，然后运行sample.py 显示此异常

[wukenaihe]

@NickyWu123 确认下adb是否可以正常使用.where adb能够确认adb是否已成功设置成环境变量