问如何访问iFrame中的不一致小部件而不出现错误？

EN

<iframe id="discordIframe" title="discordIframe" src="https://discordapp.com/widget?id=162891400684371968&amp;
theme=dark" width="100%" height="365" 
allowtransparency="true" frameborder="0">
#document
</iframe>

import selenium.webdriver as webdriver
import selenium.webdriver.common.by as by
import selenium.webdriver.support.ui as ui
import selenium.webdriver.support.expected_conditions as EC

CHROMEDRIVER_PATH = r'D:\Software\Chromedriver\chromedriver.exe'
browser = webdriver.Chrome(executable_path = CHROMEDRIVER_PATH)

std_wait = ui.WebDriverWait(browser, 10)
extended_wait = ui.WebDriverWait(browser, 30)
iframe_wait = ui.WebDriverWait(browser, 90)

print("Visiting Discord....")
browser.get(r"https://slayersclub.bethesda.net/en/#")
leaderboard = std_wait.until(EC.presence_of_element_located((by.By.CSS_SELECTOR, "div[class = 'module top-contributors']"))
                    )
browser.execute_script("arguments[0].scrollIntoView();", leaderboard)
iframes = extended_wait.until(EC.presence_of_all_elements_located((by.By.CSS_SELECTOR, "div[class = 'frame frame--padding']"))
                            )
iframes[1].click()
discordframe = iframe_wait.until(EC.presence_of_element_located((by.By.CLASS_NAME, "discordIframe"))
                                    )
browser.switch_to.frame(discordframe)
extended_wait.until(EC.presence_of_element_located((by.By.CLASS_NAME, "widgetBtnConnect-2fvtGa"))
                    ).click()