Error while obtaining UI hierarchy XML file: com.andriod.ddmlib.SynException:Remote object doesnt exist解决办法

在做APP自动化时获取界面元素，报如下错误：

obtaining UI hierarchy

Error while obtaining UI hierarchy XML file:
com.andriod.ddmlib.SynException:Remote object doesnt exist

 

解决办法：关闭appium，获取重启即可