pythone selenium报错 求大人看看

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

这是代码

```python
from selenium import webdriver
import time



def tool(times, name):
    for i in times:
        print(i.text)
        if name in i.text:
            i.find_element_by_tag_name('a').click()



def start(name):

    item = driver.find_element_by_xpath('//*[@id="ac-globalnav"]/div/ul[2]')
    items = item.find_elements_by_xpath('li')
    tool(items, name)


def model(name):
    item = driver.find_element_by_xpath('//*[@id="chapternav"]/div/ul')
    items = item.find_elements_by_xpath('li')
    tool(items, name)


if __name__ == '__main__':
    driver = webdriver.Chrome('chromedriver')
    driver.get("https://www.apple.com/")
    driver.maximize_window()
    start('iPhone')

    model('iPhone 13 Pro')

items = item.find_elements_by_xpath('li')这里有问题

items = item.find_elements_by_xpath('li')改成items = item.find_elements_by_xpath('./li')试试