How to connect qt widgets app with selenium using Python

[naresha911]

Virtual machine
Ubuntu : 22.04.1

1. Successfully installed selenium and all required packages. Verified basic selenium test case to launch firefox browser (without qtwebdriver).
2. Successfully built qtwebdriver using these instructions https://github.com/cisco-open-source/qtwebdriver/wiki/Build-And-Run.
3. Added path to out/dist/desktop/release/bin/ in my Ubuntu PATH
4. Modified Qt widgets mainwidow sources as per the instructions https://github.com/cisco-open-source/qtwebdriver/wiki/Use-QtWebDriver-to-run-your-application
5. The qtwidgets application has successfully build and is running. I get an error in console though:
   [SEVR]: Root './web' does not exist!

Now to verify one simple case with selenium in Python, I used below code:

from selenium import webdriver
capability = webdriver.DesiredCapabilities.FIREFOX
capability['browserStartWindow']='*'
driver = webdriver.Remote(
    desired_capabilities=capability,
    command_executor="http://127.0.0.1:9517"

)
print("Native page source:", driver.getPageSource());
elt = driver.findElement(By.xpath("//QTextEdit"));

I get following errors:

/home/npp/Qt_5_15_2/Examples/Qt-5.15.2/widgets/mainwindows/application/testrun.py:32: DeprecationWarning: desired_capabilities has been deprecated, please pass in an Options object with options kwarg

  driver = webdriver.Remote(

Traceback (most recent call last):

  File "/home/npp/Qt_5_15_2/Examples/Qt-5.15.2/widgets/mainwindows/application/testrun.py", line 32, in <module>

    driver = webdriver.Remote(

  File "/home/npp/.local/lib/python3.10/site-packages/selenium/webdriver/remote/webdriver.py", line 288, in __init__

    self.start_session(capabilities, browser_profile)

  File "/home/npp/.local/lib/python3.10/site-packages/selenium/webdriver/remote/webdriver.py", line 381, in start_session

    response = self.execute(Command.NEW_SESSION, parameters)

  File "/home/npp/.local/lib/python3.10/site-packages/selenium/webdriver/remote/webdriver.py", line 444, in execute

    self.error_handler.check_response(response)

  File "/home/npp/.local/lib/python3.10/site-packages/selenium/webdriver/remote/errorhandler.py", line 249, in check_response

    raise exception_class(message, screen, stacktrace)

selenium.common.exceptions.WebDriverException: Message: Missing or invalid 'desiredCapabilities'

Am I missing any libs? I kindly request someone to guide me here. I just start learning selenium. I'm basically a qt developer.
We would like to use selenium for testing our qt applications.

Thank you