Can't add libraries

[theguymadmax]

You may need to permit Jellyfin to access to files and folders. I don't have a Mac in front of me to troubleshoot and it's been a while since I used a Mac, but I think this is how you would do it.

1. On your Mac, choose Apple menu  > System Preferences, click Security & Privacy, then click Privacy.
   
2. Select Files and Folders.
   
3. Click on the padlock icon on the bottom left of the window to make changes - you'll be prompted for your Mac password or fingerprint
   
4. Select the checkbox next to Jellyfin to allow access to files and folders. If it's not there, then click on the plus icon and add it.