Traceback (most recent call last):
File "Test001_RefuseSaleManagerRegister.py", line 27, in testRefuseRegisterApplication
print(self.appium_driver.window_handles)
File "D:\software\python\3.6.6\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 723, in window_handles
return self.execute(Command.W3C_GET_WINDOW_HANDLES)['value']
File "D:\software\python\3.6.6\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 320, in execute
self.error_handler.check_response(response)
File "D:\software\python\3.6.6\lib\site-packages\appium\webdriver\errorhandler.py", line 29, in check_response
raise wde
File "D:\software\python\3.6.6\lib\site-packages\appium\webdriver\errorhandler.py", line 24, in check_response
super(MobileErrorHandler, self).check_response(response)
File "D:\software\python\3.6.6\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: Could not proxy. Proxy error: Could not proxy command to remote server. Original error: 404 - "unknown command: session/f9dc30098067a7aa5fc5c34eda847e42/window/handles"

appium server：1.8.1
python：3.6.6

之前没有问题，是 Python3.6.4，不知道版本有影响没