Slider shows Backgroundgrid (greyed out "Background Image"

Hey i used a slider. And i put background images in there. Now the images work like they have to work, but behind it there is this “Slider Backgroundimage”. Does anyone know how to get rid of it?
Thank you so much. It only appears at the Smartphone and Tablet Breakpoint.

Maybe add a screenshot + arrow to the issue (Very Hard to understand your issue).