No way to read WEBDRIVER_URL with the 'pip install' method

[smtdev]

Just wanted to ask for help with setting up the service on an unprivileged LXC container. I have installed everything in the following way:

• changedetection.io: using 'pip install [...]' as per the documentation and running the command changedetection.io -d /opt/changedetection -p 5000
• Selenium Server: installing xvfb, java, chromedriver and running the command /usr/bin/xvfb-run /usr/bin/java -Dwebdriver.chrome.driver=/usr/bin/chromedriver -jar /opt/selenium/selenium-server-standalone.jar to start the Selenium Server on the machine.

Both services are working individually, meaning I can access Selenium through http://ip:4444/wd/hub and changedetection through http://ip:5000 but I haven't been able to find a way to tell changedetection.io to read the WEBDRIVER_URL environment variable, which contains the Selenium URL, even though it's already loaded in the 'env'. I haven't tried installing Playwright yet but I suppose it will be the same.

Is there any way to tell the binary to read it?

Edit:

This is the error received in the WebUI when I choose and accept that fetch method:

Thanks!