MPD media player album art not working

[winterscar]

The problem

Having just updated to 2021.1.0, I was hoping to see album art from my mopidy server. However, this does not appear to work.
The media player has an entity_picture with a value of /api/media_player_proxy/media_player.media_mat?token=xxx?cache=xxx but the media player card does not display the album art, and navigating to the above url yeilds an http 500 error

Environment

• Home Assistant Core release with the issue:
• Last working Home Assistant Core release (if known): none
• Operating environment (OS/Container/Supervised/Core): docker on rancheros
• Integration causing this issue: mpd
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/mpd/

Problem-relevant configuration.yaml

media_player:
  - platform: mpd
    host: mars
    port: 6602
    name: Media - Mat

Traceback/Error logs

http 500

Additional information

Change made by @mweinelt

[probot-home-assistant]

Hey there @fabaff, mind taking a look at this issue as its been labeled with an integration (mpd) you are listed as a codeowner for? Thanks!
_{^{(message by CodeOwnersMention)}}

[mweinelt]

Unfortunately mopidy does not offer any albumart support. See mopidy/mopidy-mpd#17.

[winterscar]

Bummer, but I guess this can be closed as the issue is not with home assistant.