highend: blank showing up on the featured section

Hi, as I am trying to build my first highend webpage, I received the following mesage on the homepage: No slides found, please add at least one slide template to the chosen language.

When I first downloaded the theme and demo, everything looked so nice but as I was customizing things, I must have done something wrong.

What does this error message mean? Can you help? Thanks!!

I included a screenshot – please see attachment.