Nzbget category faillure

Who can put me on the right track with the following, I’ve been working on it for a few days, but I can’t make the connection.

I set up a home server with CasaOs, and placed the Nzbget docker there.
The server has the OS on an SSD card, and the content is on a hard disk.
With the standard setting of Nzb, the download is retrieved properly, but then it is on the SSD.
I am working on moving this to a folder on the hard disk, but this has not worked so far.

Downloading on the SSD is no problem if it is then moved to the hard disk folder movies.

Whatever I do, I keep getting errors.
the path of the folder is
/srv/dev-disk-by-uuid-f2137740-d40d-4562-b1b0-aaa3df078d94/Data/Emby/Movies. if I fill this in at Nzb category movies I get a failure.

if I change this to, /mnt/Data/Emby/Movies I also get a failure.

What am I missing, the folder is also shared, it seems to me a permission issue

Ron