Please try to make sure the version of browsers equal to the version of browser drivers.
For example: Chrome Browser version = Chrome Driver version = 86.
In case the versions are different, please try to upgrade or downgrade one of them to be similar.
To upgrade WebDrivers:
1. In automatical ways
- Add argument --config -webui.autoUpdateDrivers=true into command when running tests with KRE.
- From Katalon Studio: Tools -> Update WebDrivers
2. In manual ways
- Replace Selenium library
- Replace WebDriver binaries (application-level)
- Replace WebDriver binaries (project-level)
Please refer to this guide for more details https://docs.katalon.com/katalon-studio/docs/handle-webdrivers.html#terminate-webdriver-processes
To downgrade WebDrivers
Do it manually by downloading a specific version of Browser Drivers. For example:
Chrome Drivers: https://chromedriver.chromium.org/downloads
Gecko Drivers: https://github.com/mozilla/geckodriver/releases
and Replace WebDriver binaries (project-level) or Replace WebDriver binaries (application-level)