Now i have an error
Fatal error: Declaration of theme_adaptable\output\core\course_renderer::course_modchooser($modules, $course) must be compatible with core_course_renderer::course_modchooser() in D:\www\osvita.vpo.com.ua\theme\adaptable\classes\output\core\course_renderer.php on line 70
I think you've got an old version of the Adaptable theme. The 4.1 version doesn't declare course_modchooser() on line 70 (or anywhere) in classes/output/core/course_renderer.php.
Make sure you've got the latest Adaptable version for Moodle 4.1.
If you mean, you would like to run Moodle 4.1 on PHP 8.1, then you have to wait: MDL-73016. Even when it is done, the question remains whether the (non-core) Theme Adaptable has a version for Moodle 4.1 and PHP 8.1.