Error1 reports
Fix UnknownErrorException
in Selenium
✅ Solution
UnknownErrorException in Selenium often arises due to inconsistencies between the installed ChromeDriver version and the Chrome browser version. To resolve this, download the ChromeDriver version that matches your Chrome browser version from the official ChromeDriver website and ensure it's accessible in your system's PATH or explicitly specified during driver initialization. Alternatively, use a dependency management tool like WebDriverManager to automate ChromeDriver setup, ensuring compatibility.
Related Issues
Real GitHub issues where developers encountered this error:
Timeline
First reported:Oct 30, 2025
Last reported:Oct 30, 2025