I am trying to modify a wordpress theme, but I have encountered a problem which I could not find out the reason for. According to the same documentation, it is only a question of activating the slider option, and telling you what kind of images with reference to the post and its category.
The theme using is the following
View as if you were a user by visiting the page
As administrator modifying contents and other
It should be noted, that I am working in local, to then export everything to my remote server, I just hope, that this is not one of the problems.