error fix

use OCP\AppFramework\Bootstrap\IBootContext;

use OCP\AppFramework\Bootstrap\IBootstrap;

use OCP\AppFramework\Bootstrap\IRegistrationContext;

use OCP\BackgroundJob\IJobList;

use OCP\Calendar\IManager;

use OCP\Dashboard\IAPIWidgetV2;

use OCP\Defaults;

use OCP\IConfig;

use OCP\IDBConnection;

use OCP\IL10N;

use OCP\ILogger;

use OCP\IRequest;

use OCP\IUserManager;

use OCP\L10N\IFactory as L10NFactory;

use OCP\Mail\IMailer;

use OCP\Dashboard\IAPIWidgetV2;

use OCP\User\Events\UserDeletedEvent;

use function method_exists;