Joomla Gallery Support

Hi!

I'm using Joomla Joomla ‎5.4.6/OS Gallery 6.1 Pro (2023 y), PHP 8.1

I can't use the extension. The old galleries are still there. I tried updating, but it didn't fix it.
What could be the problem?

After debugging:

# Function Location
1 () JROOT/administrator/components/com_osgallery/osgallery.php:40
2 require_once() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:71
3 JoomlaCMSDispatcherLegacyComponentDispatcher::JoomlaCMSDispatcher{closure}() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:73
4 JoomlaCMSDispatcherLegacyComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361
5 JoomlaCMSComponentComponentHelper::renderComponent() JROOT/libraries/src/Application/AdministratorApplication.php:150
6 JoomlaCMSApplicationAdministratorApplication->dispatch() JROOT/libraries/src/Application/AdministratorApplication.php:195
7 JoomlaCMSApplicationAdministratorApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:306
8 JoomlaCMSApplicationCMSApplication->execute() JROOT/administrator/includes/app.php:58
9 require_once() JROOT/administrator/index.php:32

Thank you in advance for your help!