This is from the spotify importer log:

2019-06-26 11:15:30,047 INFO Importing spotify listens for user <Spotify(user:5927): igorfradi>^M
2019-06-26 11:15:30,107 CRITICAL spotify_reader could not import listens: 'NoneType' object is not subscriptable^M
Traceback (most recent call last):^M
File "/code/listenbrainz/listenbrainz/spotify_updater/spotify_read_listens.py", line 299, in process_all_spotify_users^M
process_one_user(u)^M
File "/code/listenbrainz/listenbrainz/spotify_updater/spotify_read_listens.py", line 254, in process_one_user^M
listens = parse_and_validate_spotify_plays([currently_playing['item']], LISTEN_TYPE_PLAYING_NOW)^M
File "/code/listenbrainz/listenbrainz/spotify_updater/spotify_read_listens.py", line 220, in parse_and_validate_spotify_plays^M
listen = _convert_spotify_play_to_listen(play, listen_type=listen_type)^M
File "/code/listenbrainz/listenbrainz/spotify_updater/spotify_read_listens.py", line 63, in _convert_spotify_play_to_listen^M
album = track['album']^M
TypeError: 'NoneType' object is not subscriptable^M
2019-06-26 11:15:30,110 INFO Took a total of 0.06 seconds to process user <Spotify(user:5927): igorfradi>^M