Sections not loading

I added an api key, filled in all the settings, but the branches are not loaded, what could be the problem ?? lemancrm.1b.app I installed the Api component and in the fatal file there is such nonsense: "[2022-12-24 00:58:01] host: lemancrm.1b.app url: /app/novaposhta-integration-new/settings/ contentID: os-app-settings point: /shop.starter.php engine_sessionid: 1671836281_6153 data: Array ( [type] => 1 [message] => Uncaught Error: Class 'NovaPoshtaService' not found in /var/www/newalphademocrm/web1/web/contents/shop/admin/os-template/app_setting_control.php:1841 Stack trace: #0 /var/www/newalphademocrm/web1/web/contents/shop/admin/os-template/app_setting_control.php(1560): app_setting_control->_setSettingsArray() #1 /var/www/newalphademocrm/web1/web/packages/Engine/Engine_ContentDriver.class.php(265): app_setting_control->process() #2 /var/www/newalphademocrm/web1/web/packages/Engine/Engine_ContentDriver.class.php(120): Engine_ContentDriver->displayOne() #3 /var/www/newalphademocrm/web1/web/packages/Engine/Engine_ContentDriver.class.php(77): Engine_ContentDriver->display() #4 /var/www/newalphademocrm/web1/web/packages/Engine/Engine.class.php(132): Engine_ContentDriver->getString() #5 /var/www/newalphademocrm/web1/web/shop.starter.php(123): Engine->execute() #6 {main} thrown [file] => /var/www/newalphademocrm/web1/web/contents/shop/admin/os-template/app_setting_control.php [line] => 1841 )