Im getin this after updating to Nextkloud 18.0.0 RC 2
RuntimeException: App class OCA\NextcloudAnnouncements\AppInfo\Application is not setup via query() but directly
0. /apps/nextcloud_announcements/lib/AppInfo/Application.php - line 34:OCP\AppFramework\App->__construct("nextcloud_announcements")
1. /apps/nextcloud_announcements/appinfo/app.php - line 24:OCA\NextcloudAnnouncements\AppInfo\Application->__construct()
2. /lib/private/legacy/app.php - line 265:require_once("/home/users ... p")
3. /lib/private/legacy/app.php - line 155:OC_App::requireAppFile("nextcloud_announcements")
4. /lib/private/legacy/app.php - line 128:OC_App::loadApp("nextcloud_announcements")
5. /lib/base.php - line 993:OC_App::loadApps()
6. /index.php - line 38:OC::handleRequest()