如何用Selenium批量导出SSRS报表为PDF？遇节点丢失错误求助

我需要从供应商搭建的SSRS（SQL Server Reporting Services）网站批量保存PDF报表，操作流程为：

• 设置起止日期
• 通过下拉菜单选择客户
• 点击查看报表按钮生成报表
• 将报表另存为PDF

最后一步点击PDF按钮时，会通过Javascript:void(0)打开新标签页，该标签页随后自动关闭并触发文件下载。目前单份PDF生成和下拉菜单切换操作均能成功，但循环执行PDF导出请求时，用于定位下拉菜单的ID丢失，触发如下错误：

selenium.common.exceptions.WebDriverException: Message: unknown error: unhandled inspector error: {"code":-32000,"message":"No node with given id found"}

我使用的代码如下：

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.select import Select
import time
from webdriver_manager.chrome import ChromeDriverManager
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By

options = Options()

prefs = {
   "download.prompt_for_download": False,
   "download.directory_upgrade": True,
   "plugins.always_open_pdf_externally": True
}
options.add_experimental_option("prefs", prefs)
options.add_experimental_option("detach", True)


driver = webdriver.Chrome(service=Service(ChromeDriverManager().install()), options=options)
driver.maximize_window()
driver.get("https:\\SSRSwebsite\report\report") #Site has been removed for security reasons.


#A short moment to fill in date manually. Will be improved later on.
time.sleep(10)

#Find frame where ID could be found.
iframe = driver.find_element(By.XPATH, '//iframe[@class="viewer"]')
driver.switch_to.frame(iframe)

#location of pulldown menu get all selections that are possible.
listofelements = driver.find_elements(By.XPATH,'//*[@name="ReportViewerControl$ctl04$ctl07$ddValue"]/option')

#Loop to fill in the each option and create the PDF file.
for i in range(1, len(listofelements)):
    time.sleep(10)
    #Fill in dropdown menu
    Dropdown = Select(driver.find_element(By.ID,"ReportViewerControl_ctl04_ctl07_ddValue"))
    Dropdown.select_by_value(listofelements[i].get_attribute("value"))
    
    #button to create report
    driver.find_element(By.XPATH, "//input[@id='ReportViewerControl_ctl04_ctl00']").click()
    time.sleep(3)

    #Open save menu
    driver.find_element(By.ID, "ReportViewerControl_ctl05_ctl04_ctl00").click()

    #Create PDF to download. This button creates a new tab and closed directly after is has been created.
    driver.find_element(By.XPATH, "//a[@title='PDF']").click()

已尝试的解决方法：

• 点击PDF按钮后立即切换回第一个标签页
• 在不同标签页分别打开页面并逐个执行操作

内容的提问来源于stack exchange，提问作者Koen Alferink