Selenium error

SessionNotCreatedException: session not created: This version of ChromeDriver only supports Chrome version XX

The installed ChromeDriver binary doesn't match the installed Chrome browser version.

Why this happens

Chrome auto-updated but the ChromeDriver binary wasn't updated to match
CI pinned a specific ChromeDriver version that's now behind the runner image's Chrome

How to fix it

Use Selenium Manager (built into Selenium 4.6+) so it resolves and downloads the matching driver automatically
If pinning manually, check the installed Chrome version (`chrome://version`) and download the matching ChromeDriver release
In CI, pin the browser image version too, not just the driver, so both move together intentionally