Fatal error: Uncaught Error: Class "OCA\FilesReminders\Db\Reminder" not found in /var/www/html/nextcloud/apps/files_reminders/lib/Model/RichReminder.php:19 Stack trace: #0 {main} thrown in /var/www/html/nextcloud/apps/files_reminders/lib/Model/RichReminder.php on line 19