Problem Typ E_ERROR since WordPress 6.1.1

Hello,
my Active Theme, Medical Circle Pro (Version 3.0.4), repeatedly fails to load correctly since WordPress Version 6.1.1, PHP-Version 8.0.27.
After the problem caused, I receive a message in backend: This site is experiencing technical difficulties. Please check your site admin email for instructions. There I find a link for recovery mode…

Here are the Details:
==============
Failure Typ E_ERROR in line 125 der Datei /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-content/themes/medical-circle-pro/acmethemes/updater/theme-updater-class.php verursacht. Fehlermeldung: Uncaught Error: Attempt to modify property “no_update” on bool in /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-content/themes/medical-circle-pro/acmethemes/updater/theme-updater-class.php:125
Stack trace:
#0 /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-includes/class-wp-hook.php(310): EDD_Theme_Updater->theme_update_transient()
#1 /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#2 /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-includes/option.php(1986): apply_filters()
#3 /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-includes/update.php(869): get_site_transient()
#4 /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-includes/update.php(931): wp_get_translation_updates()
#5 /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-admin/menu.php(33): wp_get_update_data()
#6 /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-admin/admin.php(158): require(‘…’)
#7 /mnt/web116/b0/98/5612598/htdocs/WordPress_03/wp-admin/index.php(10): require_once(‘…’)
#8 {main}
thrown

Thanks for helping.
Kind regards
Heidrun