media path could not be found

[MrE]

I am trying to set up my media libraries in Jellyfin. I have created the shared folders in my Synology NAS, but I receive this error: "The path could not be found. Please ensure the path is valid and try again". I don't know what the problem is or how to resolve it.

My media folders are created as:

Media/Movies/Owned  - movies are in folders with the name of the movie
Media/Movies/YouTube - movies are in this folder

Can anyone help?

I do not encounter this problem if I use the Plex media server (it finds all of my media without any problem), but I would rather use Jellyfin, if I can get it to work.