Selenium не находит src картинки

Пытался получить сурс картинки, но при попытке в функции test выдаёт пустой массив.

import cv2
import time
import base64
import pickle
import pytesseract
from PIL import Image
from io import BytesIO
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
pytesseract.pytesseract.tesseract_cmd = r'C:\Program Files\Tesseract-OCR\tesseract.exe'
def resolver(captcha):
    data = captcha
    data = data.replace('data:image/jpeg;base64,', '')
    im = Image.open(BytesIO(base64.b64decode(data)))
    im.save('captcha.png', 'PNG')
    img = cv2.imread(im)
    img = cv2.resize(img, None, fx=9, fy=9)
    task = pytesseract.image_to_string(img, config='-c tessedit_char_whitelist=0123456789+?')
    result = eval(task[:-1])
    
    return result
    
    

driver = webdriver.Chrome('chromedriver.exe')
driver.get('https://lolz.guru/forums/contests/page-2')
cookies = pickle.load(open("cookies.pkl", "rb"))
driver.add_cookie({"name": "xf_feed_custom_order", "value": "post_date"})
for cookie in cookies:
    driver.add_cookie(cookie)
driver.refresh()
time.sleep(3)



def test():
    driver.refresh()
    a = driver.find_elements_by_xpath("//div[contains(@class, 'discussionListItem    unread prefix75  ')]/div/a")
    l = len(a)
    if l == 0:
        time.sleep(1800)
        test()
    else:
        for i in range(l):
            url = a[i].get_attribute('href')
            driver.execute_script("window.open('"+url+"', '_')") 
            time.sleep(2)
            cap = driver.find_elements_by_xpath('//*[@id="Captcha"]/div/label/img')
            print(cap) # - Выводит []
            cap = cap.get_attribute('src')
            ans = driver.find_element_by_name('captcha_question_answer')
            ans.send_keys(resolver(cap))
test()
    

#for a in driver.find_elements_by_xpath("//div[contains(@class, 'discussionListItem    unread prefix75  ')]/div/a"):
#    a.send_keys(Keys.CONTROL + 't')
#    time.sleep(0.1)
#    driver.execute_script("window.open('"+a.get_attribute('href')+"', 'new window')")
    

import cv2
import time
import base64
import pickle
import pytesseract
from PIL import Image
from io import BytesIO
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
pytesseract.pytesseract.tesseract_cmd = r'C:\Program Files\Tesseract-OCR\tesseract.exe'
def resolver(captcha):
    data = captcha
    data = data.replace('data:image/jpeg;base64,', '')
    im = Image.open(BytesIO(base64.b64decode(data)))
    im.save('captcha.png', 'PNG')
    img = cv2.imread(im)
    img = cv2.resize(img, None, fx=9, fy=9)
    task = pytesseract.image_to_string(img, config='-c tessedit_char_whitelist=0123456789+?')
    result = eval(task[:-1])
    
    return result
    
    

driver = webdriver.Chrome('chromedriver.exe')
driver.get('https://lolz.guru/forums/contests/page-2')
cookies = pickle.load(open("cookies.pkl", "rb"))
driver.add_cookie({"name": "xf_feed_custom_order", "value": "post_date"})
for cookie in cookies:
    driver.add_cookie(cookie)
driver.refresh()
time.sleep(3)



def test():
    driver.refresh()
    a = driver.find_elements_by_xpath("//div[contains(@class, 'discussionListItem    unread prefix75  ')]/div/a")
    l = len(a)
    if l == 0:
        time.sleep(1800)
        test()
    else:
        for i in range(l):
            url = a[i].get_attribute('href')
            driver.execute_script("window.open('"+url+"', '_')") 
            time.sleep(2)
            cap = driver.find_elements_by_xpath('//*[@id="Captcha"]/div/label/img')
            print(cap) # - Выводит []
            cap = cap.get_attribute('src')
            ans = driver.find_element_by_name('captcha_question_answer')
            ans.send_keys(resolver(cap))
test()
    

#for a in driver.find_elements_by_xpath("//div[contains(@class, 'discussionListItem    unread prefix75  ')]/div/a"):
#    a.send_keys(Keys.CONTROL + 't')
#    time.sleep(0.1)
#    driver.execute_script("window.open('"+a.get_attribute('href')+"', 'new window')")



    

Пример формы:

<div class="ContestCaptcha" data-refresh-url="threads/1790699/captcha/update">
                        
<div class="captchaBlock">
    <div id="Captcha" data-source="misc/captcha">
    <div class="ddText"><label for="106e7592132521788ed1e1dacccb5f28092edc52"><img src="data:image/jpeg;base64,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"></label></div>
    <input type="text" name="captcha_question_answer" id="106e7592132521788ed1e1dacccb5f28092edc52" value="" placeholder="Введите ответ" class="textCtrl OptOut">
    
    <input type="hidden" name="captcha_question_hash" value="106e7592132521788ed1e1dacccb5f28092edc52">
</div>
</div>

                    </div>