PHP7.4 -> PHP8.4 problem when changing

Hi
Please tell me if your template is compatible with PHP8 because when I'm changing to a new PHP 8.2 or 8.4 version I receive an error as shown below when I entered the Category blog section.
The main page is ok.   

Hello,

Our templates have been tested with PHP 8.2 so far. You will need to upgrade to Joomla 5 to make it compatible with PHP 8.2. For this you will need updated template files. You must renew your account to get download access to the updated template files.

Regards
Milos

sorry I'm ussing on a new server
- PHP 8.3.12
- MySQLi 10.11.6-MariaDB-0+deb12u1

Think I have to update it....... some BLACK FRIDAY promo ??

The same problem I will have with Luxury template -with J 4.4.9 and PHP 8.3 works fine.
When updated to J5 Luxury not. Does Luxury template have a J5 integrated version to make an upgrade?

All templates have separate files for J3, J4, and J5. However, on some websites, you don't need to update template files when upgrading from J4 to J5 because they are compatible.

Regards,
Milos

ok.
When I made update for Luxury from J4.4.9 to J5.0.0 front site is working but admin panel has an error and can't logg in