Every piece of theme developed has inherent flaws. As software developers, we are on a revised and developed our theme to more complete to meet the needs of customers.
We release updates. Updating theme ensures that you’re running the most current and the most error restrictive version.
At first, You need to remove the default slideshow in the Layout Builder, then setup and add the Revolution slider module into the Layout Builder (but I recommend you should not use this module. It made my theme running more slowly, that's the reason why I removed it from my theme's options)