No module named _spotify

I’m having trouble loading the spotify extension, installation went seemingly well, but apparently not :frowning:

what is causing this?

Here is the output from my terminal:

MacBook-Pro:~ so$ mopidy
** Message: pygobject_register_sinkfunc is deprecated (GstObject)
INFO Starting Mopidy 1.1.1
INFO Loading config from builtin defaults
INFO Loading config from /Users/so/.config/mopidy/mopidy.conf
INFO Loading config from command line options
INFO Enabled extensions: spotify, mpd, http, stream, m3u, softwaremixer, file, local
INFO Disabled extensions: none
ERROR Extension spotify failed during setup, this might have left the registry in a bad state.
Traceback (most recent call last):
File "/usr/local/lib/python2.7/site-packages/mopidy/", line 145, in main
File "/usr/local/lib/python2.7/site-packages/mopidy_spotify/", line 49, in setup
from mopidy_spotify.backend import SpotifyBackend
File "/usr/local/lib/python2.7/site-packages/mopidy_spotify/", line 11, in 
import spotify
File "/usr/local/lib/python2.7/site-packages/spotify/", line 81, in 
from spotify._spotify import ffi, lib # noqa
ImportError: No module named _spotify
INFO Starting Mopidy mixer: SoftwareMixer
INFO Starting Mopidy audio
INFO Starting Mopidy backends: StreamBackend, M3UBackend, FileBackend, LocalBackend
INFO Loaded 0 M3U playlists from /Users/so/.local/share/mopidy/m3u
INFO No local library metadata cache found at /Users/so/.local/share/mopidy/local/library.json.gz. Please run mopidy local scan to index your local music library. If you do not have a local music collection, you can disable the local backend to hide this message.
INFO Loaded 0 local tracks using json
INFO Starting Mopidy core
INFO Audio output set to "autoaudiosink"
INFO Starting Mopidy frontends: MpdFrontend, HttpFrontend
INFO MPD server running at [::ffff:]:6600
INFO HTTP server running at [::ffff:]:6680

For future reference: