Selenium Grid 4.0.0.Beta-1 Docker driver crashes my python app when adding chrome extensions when Selenium local does not

I have hunted high and low for a recent answer and tried most of the older ones (so please do not mark this is as duplicate) and every site that google presented me ..nothing works so far. I want to use the latest version of Selenium Grid (Docker image) , I have it set up and working, and I can scrape data remotely as long as I do not have an extension installed or define a user directory, as follows...

This code does work, but it runs on a local browser and not on the docker Selenium Grid.

from selenium import webdriver  from selenium.webdriver import Chrome  from selenium.webdriver.chrome.options import Options  from selenium.webdriver.support.ui import WebDriverWait  from selenium.webdriver.support import expected_conditions as ec  from selenium.webdriver.common.by import By  from selenium.common.exceptions import TimeoutException  from selenium.webdriver.common.desired_capabilities import DesiredCapabilities    class sgrid:                   def init_chrome_with_cookies_local(self):          chrome_options = Options()          chrome_options.add_extension(r'C:\Users\charl\OneDrive\python\vidiqext\3.41.0_0.crx')          chrome_options.add_argument("user-data-dir=C:/Users/charl/OneDrive/python/userdata")           driver = webdriver.Chrome(chrome_options=chrome_options)           return driver        

But when I switch to this

    def init_chrome_with_cookies_remote(self):          chrome_options = Options()          chrome_options.add_extension(r'C:\Users\charl\OneDrive\python\vidiqext\3.41.0_0.crx')          chrome_options.add_argument(r'user-data-dir=C:/Users/charl/OneDrive/python/userdata')          driver = webdriver.Remote(command_executor='http://x.x.x.x:4444/wd/hub',chrome_options=chrome_options)          return driver  

....it crashes, and it does not matter if both the add_extension and add_argument are tried, or one then the other, they both cause the app to crash.

File "c:/Users/charl/OneDrive/python/sgrid.py", line 183, in iterate driver.get('about:blank') UnboundLocalError: local variable 'driver' referenced before assignment PS C:\Users\charl\OneDrive\dataharvest\visualstudio>

This error really just means the driver did not get configured properly as all the other code is the same. Now I understand that some solutions on StackOverflow use the DesiredCapabilities way, but I am told that this is deprecated, and none have worked either so if anyone has this working in Python 3, Selenium Grid 4 on docker, I would be so grateful to know.

https://stackoverflow.com/questions/66539383/selenium-grid-4-0-0-beta-1-docker-driver-crashes-my-python-app-when-adding-chrom March 09, 2021 at 09:07AM