How to handle some Web Drivers issues?

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)