Beets crashes when importing library

[Kaduo]

Problem

Running:

$ beet import /my/music/library

...works fine until it encounters a problem album that it cannot find in MusicBrainz. After providing the MusicBrainz id (it's a 89%-something match), it wants to modify a couple of filenames, then no matter what option I choose (be it Apply or Use as is), I get the following error:

Traceback (most recent call last):
  File "/mnt/mpathag/hencemachine/virtualenv/bin/beet", line 8, in <module>
    sys.exit(main())
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/ui/__init__.py", line 1301, in main
    _raw_main(args)
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/ui/__init__.py", line 1288, in _raw_main
    subcommand.func(lib, suboptions, subargs)
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/ui/commands.py", line 1037, in import_func
    import_files(lib, paths, query)
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/ui/commands.py", line 977, in import_files
    session.run()
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/importer.py", line 345, in run
    pl.run_parallel(QUEUE_SIZE)
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/util/pipeline.py", line 446, in run_parallel
    raise exc_info[1].with_traceback(exc_info[2])
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/util/pipeline.py", line 311, in run
    out = self.coro.send(msg)
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/util/pipeline.py", line 193, in coro
    func(*(args + (task,)))
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/importer.py", line 1436, in lookup_candidates
    task.lookup_candidates()
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/importer.py", line 666, in lookup_candidates
    autotag.tag_album(self.items, search_ids=self.search_ids)
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/autotag/match.py", line 512, in tag_album
    for matched_candidate in hooks.album_candidates(items,
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/plugins.py", line 573, in decorated
    for v in generator(*args, **kwargs):
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/autotag/hooks.py", line 699, in album_candidates
    yield from invoke_mb(mb.match_album, artist, album, len(items),
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/autotag/mb.py", line 633, in match_album
    albuminfo = album_for_id(release['id'])
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/autotag/mb.py", line 750, in album_for_id
    actual_res = _find_actual_release_from_pseudo_release(res)
  File "/mnt/mpathag/hencemachine/virtualenv/lib/python3.10/site-packages/beets/autotag/mb.py", line 681, in _find_actual_release_from_pseudo_release
    relations = pseudo_rel['release']["release-relation-list"]
KeyError: 'release-relation-list'

This isn't specific to a particular album, any album that beets doesn't instantly recognize as a 100% match seems to give me this issue.

Setup

• OS: Gentoo Linux
• Python version: 3.10.12
• beets version: 1.6.1
• Turning off plugins made problem go away (yes/no): no

My configuration (output of beet config) is:

import:
    copy: no
    write: no

[arsaboo]

Looks like this was introduced by #4714
@TypicalFence can you take a look?

[jackwilsdon]

#4834 already appears to be open to fix this.

[Kaduo]

#4834 already appears to be open to fix this.

I confirm that this fixes the bug!

[TypicalFence]

@jackwilsdon I think this was already fixed in #4833

[arsaboo]

Can we please close this as this is fixed now?