我對硒有疑問：我無法單擊由我單擊的第一個按鈕生成的彈出窗口中包含的按鈕。    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    from selenium.webdriver.firefox.options import Options    # Webdriver    browser = webdriver.Chrome('C:\\Users\\zlell\\PycharmProjects\\PyroLello\\Userbot\\chromedriver.exe')    browser.get("https://www.eventbrite.com/e/120621788015")    # This button originates a pop-up    python_button = browser.find_element_by_xpath('//*[@id="eventbrite-widget-modal-trigger-120621788015"]')    # Click    python_button.click()    # The pop-up with the new button appears    # Try to find the button included in the pop-up - Doesn't work    python_button_2 = browser.find_element_by_css_selector("button.eds-btn.eds-btn--button.eds-btn--fill")    # Click - Doesn't Work    python_button_2.click()