Revolution Slider Error: Slider with alias “slider-name” not found

This error message means that the slider you are referencing for does not exists and cannot be loaded.
Here’s an example of what this error looks like:

Usually this error happens if you have not imported sliders together with premade websites demo content.

To fix this , please follow to The7-> Premade websites and import sliders for corresponding demo

If the page is updated before importing sliders , slider name will be changed to “none” and appears error like this Slider with alias “none” not found
In such case you will need to edit the page, and  manually select new imported slider.

This slider can be placed directly on the page as a shortcode  

Or can be set as part of the header, edit your page, and in the “Page Header Options” you can change the slider