Server Error after change default languge

Moved the site from localhost to hosting. Language settings:

On localhost all works fine, but on real website I have an error on home page

If I change the language settings like this:

than home pages work, but titles of my post all in latin but not in cyrilic

I need everything to work and at the same time the titles of the articles were in cyrillic, as I originally wrote them. Help please :pray:

After many hours of searching, I finally found what the problem is. Should need included the version php 7.4 like on localhost, but not 8.0