What is UnsupportedCommandException in Selenium?

Exceptions in Selenium, such as UnsupportedCommandException, occur during test execution when Selenium WebDriver encounters issues not addressed in the automation script. These exceptions assist testers in diagnosing script failures, with UnsupportedCommandException arising from unsupported commands by the browser or WebDriver due to factors like browser compatibility issues, WebDriver limitations, incorrect command usage, deprecated commands, or version mismatches. Resolving these issues involves updating WebDriver and browser versions, switching to supported browsers or WebDriver, using correct syntax, handling browser-specific functionalities, and avoiding deprecated commands. While Selenium has been a popular tool for automation testing, it struggles to meet the demands of modern agile and extreme programming methodologies, making tools like testRigor more attractive due to features like generative AI for test case generation, no code dependency, easy integrations, and support for multiple testing types. testRigor's capabilities in simplifying and enhancing test automation help reduce costs and effort, ensuring high product quality, with testimonials highlighting significant maintenance reduction compared to Selenium.