This part of the path what you named ‘YourPrettyName’ , if you look with file Browser what there is really displayed, and insert this into the path, doesn’t it work then?
This ‘0123-4567’ I wrote before is not out of my fantasy, this is what File Browser really displays here if I look into ‘/run/media/’ (why ever).
I want to clear this for the reason, that not a misunderstanding occurs.
My working link is in ‘/home/defaultuser/’, points to ‘/run/media/defaultuser/’ and is named ‘SD-Card’. And this works. If I tap on this link in File Browser, the folder ‘/run/media/defaultuser/’ opens and the visible content of the folder is ‘0123-4567’. Tapping there, accesses the content of the SD-card. I did so with File Browser to open mp4, mp3 and jpeg files to play videos, music or display images.
Before I also tried to make a symlink that points direct to ‘/run/media/defaultuser/0123-4567/’ to avoid an extra tap, but this never worked.
Can it be, that SFOS always overwrites prettynames of SD cards with 0123-4567 ?