为什么我得到了一个StaleElementReferenceException，尽管它在页面上找到了元素？

Question

selenium.common.exceptions.StaleElementReferenceException: Message: stale element reference: element is not attached to the page document

    for link in links:
        #Go to MP3 converter homepage
        self.__driver.get("http://convert2mp3.net/en/")         

        #Type in the video link
        urlinput = self.__driver.find_element_by_id("urlinput") 

        #TEST
        print(str(urlinput))

        self.__action.send_keys_to_element(urlinput, "https://www.youtube.com" + link + Keys.ENTER).perform()

<selenium.webdriver.remote.webelement.WebElement (session="509fc04e4130a25f46f6068684b97a1a", element="0.9812681457094412-1")>
<selenium.webdriver.remote.webelement.WebElement (session="509fc04e4130a25f46f6068684b97a1a", element="0.36225331932442084-1")>

编辑：有人在评论中要求我展示我是如何定义链接的：

    yt_url = req.urlopen(vid_link)
    #Note here that 'sopa' is BeautifulSoup
    yt_page = sopa(yt_url, "html.parser")

    #Get all links
    temp_links = yt_page.find_all("a", href = True)
    links = []

    #Filter playlist to get just the video links
    for l in temp_links:
        if l["href"] not in links and "index" in l["href"] and  l["href"].startswith("/watch"):
            links.append(l["href"])

    return links

Answer 1

解决方案：

经过进一步的修修补补，我找到了答案。在for循环中，我确实再次找到了元素，但我没有意识到Selenium希望我也再次更新ActionChain。我已经在构造函数中对其进行了初始化，但是我在for循环开头的正下方添加了以下代码行：

        self.__action = chain.ActionChains(self.__driver)

而且奏效了。