Advanced Slider doesn’t show up on the site

I’m using Advanced Slider, but it doesn’t show up on the site. If I look in the code – it’s there, the info is there, the images are there, everything looks OK. But it doesn’t show. I tried to get it to the front with z-index – it didn’t work. I got this error on a second site as well. At the same time, I use this slider in two other sites and everything is OK there. In short – I’m looking for a solution to what could be the reason for this.

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