1、报错：

selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: Could not proxy command to remote server. Original error: Error: socket hang up

解决方案：添加：

desired_caps['newCommandTimeout'] =6000

self.driver.implicitly_wait(15)

2、报错：

Try to increase the 90000ms adb execution timeout represented by 'adbExecTimeout' capability

解决方案：添加：desired_caps['adbExecTimeout'] =200000

3、报错：

error: The instrumentation process cannot be initialized. Make sure the application under test does not crash and investigate the logcat output.

解决方案：

需要用命令卸载Appium Settings

adb uninstall io.appium.uiautomator2.server.test

然后在重新执行就可以了。