In the XD plugin manager, the available plugins display a warning sign against the Install button and does not install.
Open the Finder and navigate to /Users/<user name>/Library/Application Support/.
To enable the Library folder (if hidden):
- Select the Go menu and choose Home or from the Favorites section in the Finder, select <user name>.
- Select the View menu and choose Show View Options.
- From the pop-up menu, select Show Library Folder.