Errors appear in the Monitoring -> Slideshow page if there are no slideshows

Undefined index: element [slides.php:250 ? CView->render() ? include() ? require_once() in C:\xampp\htdocs\ZBX-8471\frontends\php\include\views\js\monitoring.slides.js.php:8]

Same problem was in ZBXNEXT-2073 (18) But it is CLOSED.