Fatal error: Uncaught Error: Interface "App\Metadata\Service\AppMetadataProviderInterface" not found in /var/www/crm_killing_ninja/core/backend/Metadata/Service/AppMetadataProvider.php:55 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/core/backend/Metadata/Service/AppMetadataProvider.php on line 55