FMS - Setting Backup Folder path - path not valid error

[Torsten]

Trying to set a backup folder path to an external SSD drive. I get the error 'path is not valid' and can't fix it.
Config is FMS 19.2.1.23 hosted on Mac Mini M1, MacOS 11.2.

The same setup, including the same access rights for the folder on SSD works without problem on
FMS 19.2.1.23 hosted on Mac Mini i5, MacOS 10.15.7.

What do I miss here?

[Torsten]

Ok, just found it

fmserver_helperd must be granted Full Disk Access in Privacy settings.

[mipiano]

Each of us stumbles into this trap once in a while.