I’ve activated this theme and attempted to customize but the previous them still appears. Are there required plugins necessary for this theme to load?

Pages display but get errors in developer mode (slider doesn’t seem to work)
Wordpress 6.02 PHP 8.2

In SAFARI & CHROME
Failed to load resource: the server responded with a status of 404 (Not Found)
bootstrap.js.map

SAFARI only
Error while parsing the ‘sandbox’ attribute: ‘allow-orientation-lock’, ‘allow-presentation’ are invalid sandbox flags.

The text from the page with “Custom Home Page” template, dont show under slider on frontpage??

Trying to find a way to translate the “READ MORE”, in the slider.
Using Locotranslate, but the theme file dont, get my translation in the slider??