Message: stale element reference: element is not a

I have been trying to run the following code in three different weblinks. Code works fine on one weblink. However, it throws an error message about "Message: stale element reference: element is not attached to the page document". I looked into forum's two previous threads (Python Selenium stale element fix and How to Navigate to a New Webpage In Selenium?) about the same error message but didn't get sort it out the issue. Here is my code:

driver.get('https://github.com/avassalotti')
contributions = driver.find_elements_by_xpath(".//ul[@class='filter-list small']//li") 
print(contributions)
for item in contributions:
    print (item)
    print(item.text)
    item.click()
    time.sleep(3)
    contribution = driver.find_element_by_xpath(".//*[@class='f4 text-normal mb-2']").text
    print(contribution)

Program works for this link (https://github.com/alex) and does not work for (https://github.com/agronholm, https://github.com/avassalotti).

Any advice to fix the issue.

To retrieve the details of contributions avoiding stale element reference you can use the following solution:

Code Block:

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

years = []
options = webdriver.ChromeOptions() 
options.add_argument("start-maximized")
options.add_argument('disable-infobars')
driver=webdriver.Chrome(chrome_options=options, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')
driver.get("https://github.com/agronholm")
contributions = WebDriverWait(driver, 5).until(EC.visibility_of_all_elements_located((By.XPATH, "//div[@class='profile-timeline-year-list js-profile-timeline-year-list bg-white js-sticky float-right col-2 pl-5']/ul[@class='filter-list small']//li/a")))
for item in contributions:
    print(item.get_attribute("innerHTML"))
    years.append(item.get_attribute("href"))
for year in years:
    driver.get(year)
    print(WebDriverWait(driver, 5).until(EC.visibility_of_element_located((By.XPATH, "//div[@class='js-yearly-contributions']//h2[@class='f4 text-normal mb-2']"))).get_attribute("innerHTML"))

Console Output:

      2018


      2017


      2016


      2015


      2014


      2013


      2012


      2011


      2010


      2009


      260 contributions in the last year


      637 contributions in 2017


      770 contributions in 2016


      298 contributions in 2015


      239 contributions in 2014


      101 contributions in 2013


      113 contributions in 2012


      90 contributions in 2011


      16 contributions in 2010


      2 contributions in 2009