Steps to reproduce the issue

When clicking on the "Options button" at the top right of the template, clicking save redirects to this link:

my domain /administrator/index.php?option=com_config

which generates an "Internal Server Error"

several extensions affected, including Easy Job Manager and JCE

Expected result

This message indicates a PHP error related to the StyleModel.php file in
your site. Specifically, it looks like the code is trying to access a
property called "parent" on something that is not actually an object, but
instead of an array. This can happen for a number of reasons, such as lack of
unexpected data or data structures.

Actual result

Works with limitations and redirects without saving changes to Internet Server Error

System information (as much as possible)

Joomla 5.1
PHP 8.2
Mysql 8

Easy Jobs Manager 5.3.0
JCE Editor 2.9.63

Additional comments

I'm not a programmer, but I identified this problem when I found myself unable to solve a problem that was affecting my websites, after upgrading from version 5.0.3 to 5.1.

see attached images: