AttributeError: 'NoneType' object has no attribute 'bring_active_window_to_front' error using Seleniumbase

[ZcodeZ777]

I have a code block which uses a Seleniumbase webdriver:

from seleniumbase import BaseCase
BaseCase.main(__name__, __file__, "--uc")


class MultipleDriversTest(BaseCase):
    def test_multiple_drivers(self):
        if self.browser == "safari":
            self.open_if_not_url("about:blank")
            print("\n  Safari doesn't support multiple drivers.")
            self.skip("Safari doesn't support multiple drivers.")
        url1 = "https://invideo.io/perf/ga-ai-video-generator-web/?utm_source=google&utm_medium=cpc&utm_campaign=Top16_Search_Brand_Exact_EN&adset_name=InVideo&keyword=invideo&network=g&device=c&utm_term=invideo&utm_content=InVideo&matchtype=e&placement=g&campaign_id=18035330768&adset_id=140632017072&ad_id=616240030555&gad_source=1&gclid=Cj0KCQiAvvO7BhC-ARIsAGFyToWFf0L_8iqkB32qg9prKxVApsklZ8HA69LW2O0Z6XC1nbXXz9sCTTEaAinZEALw_wcB"
        self.activate_cdp_mode(url1)
        url2 = "https://temp-mail.org/en"
        driver2 = self.get_new_driver(undetectable=True)
        driver2.uc_activate_cdp_mode(url2)
        self.sleep(2)
        self.switch_to_default_driver()
        self.sleep(2)
        self.switch_to_driver(driver2)

When I run this code, I receive the following error:

self = <test16.MultipleDriversTest testMethod=test_multiple_drivers>

    def bring_active_window_to_front(self):
        """Brings the active browser window to the front (on top).
        Useful when multiple drivers are being used at the same time."""
        self.__check_scope()
        if self.__is_cdp_swap_needed():
>           self.cdp.bring_active_window_to_front()
E           AttributeError: 'NoneType' object has no attribute 'bring_active_window_to_front'

AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\seleniumbase\fixtures\base_case.py:5791: AttributeError
------------------------------------ Latest Logs dir: C:\Users\zvirg\latest_logs\ -------------------------------------
=============================================== short test summary info ===============================================
FAILED Programs/test16.py::MultipleDriversTest::test_multiple_drivers - AttributeError: 'NoneType' object has no attribute 'bring_active_window_to_front'

What could be the reason for this error?

[mdmintz]

When activating UC Mode from multiple drivers, try it like this:

from seleniumbase import BaseCase
BaseCase.main(__name__, __file__, "--uc")

class MultipleDriversTest(BaseCase):
    def test_multiple_drivers(self):
        url1 = "https://seleniumbase.io/demo_page"
        self.activate_cdp_mode(url1)
        url2 = "https://seleniumbase.io/coffee/"
        driver2 = self.get_new_driver(undetectable=True)
        self.activate_cdp_mode(url2)
        self.sleep(2)
        self.switch_to_default_driver()
        print(self.get_current_url())
        self.sleep(2)
        self.switch_to_driver(driver2)
        print(self.get_current_url())