Similar problem as oscar1. After updating to 2025.3 I went into backups and was presented with the “backup not configured for NAME_NAS”. I tried to configure it, but apparently I got the path wrong because I now get “Error in location Synology DSM / Failed to list backups”.
My backups still work to the NFS mount to the Synology I made years ago, and I can see it in Network Storage … and backups go there …
But I am kind of OCD and don’t like the error at the top of the backups page. I went looking for where this is setup but found nothing. I would like to rerun the setup … or just turn it off … where is the information/documentation on this?