How to use Action made a new Swipe?

I want to stop the action after the drop-down, so i write down this code but it didn’t work, help plz~~

    def new_swipe_to_down(self,during=None):
        """Swipe from one point to another point, for an optional duration.

         - start_x - x-coordinate at which to start
         - start_y - y-coordinate at which to start
         - end_x - x-coordinate at which to stop
         - end_y - y-coordinate at which to stop
         - duration - (optional) time to take the swipe, in ms.

            driver.swipe(100, 100, 100, 400)
        windowSize = self.getWindowSize()
        width = windowSize.get('width')
        height = windowSize.get('height')
        action = TouchAction(self.driver)
        action \
            .press(x=width/2, y=height/4) \
            .move_to(x=width/2, y=height*3/4) \
            .wait(ms=during) \
            .release() \
Traceback (most recent call last):
  File "../../public/", line 20, in wrapper
    return func(*args, **kwargs)
  File "/Users/jianghekun/invest-app-android/testcases/index/", line 286, in test_index_refresh_info
  File "../../pageobject/", line 87, in new_swipe_to_down
    .move_to(x=width/2, y=height*3/4) \
  File "/Library/Python/2.7/site-packages/appium/webdriver/common/", line 94, in perform
    self._driver.execute(Command.TOUCH_ACTION, params)
  File "/Library/Python/2.7/site-packages/selenium/webdriver/remote/", line 201, in execute
  File "/Library/Python/2.7/site-packages/appium/webdriver/", line 29, in check_response
    raise wde
WebDriverException: Message: None

@Telmo_Cardoso plz help, thanks you

@Nukker there seems to be bug related to this action. Please check appium issues filed in last 2 days. If your is different, please open a new issue