Plex not working on Seagate D2 NAS business drive

Plex Media Server NAS & Devices
1

Hey.
Just installed Plex, I can access it from local network, can login but struggle with two setting problems:

  1. When trying to access Settings -> Server, i get this: http://prntscr.com/i3mwuy
  2. When trying to add a folder within NAS with photos, i get this when pressing “Add library”: http://prntscr.com/i3mxi4 (obviously I have added appropriate folder from NAS with photos in it)

Attached is debug log, if that helps.