The files created by the periodic backup are not displayed on the ncp-web page in the backups panel.
It shows “No backups found” - although they exist:
-rw-r----- 1 root www-data 2588047360 Aug 27 11:29 nextcloud-bkp_20190827_1566905351.tar
Are special access rights or ownersship required? What could be the reason?