Any idea why that might happen? I initially discovered it while running a script that samples from my feed and makes me a playlist. It errored out because it happened to pick this play and got a 404 when it looked it up on MusicBrainz.
The listen got submitted with the wrong ID. The ID submitted (8c5a9df8-069c-4715-bafb-4c618c26ff5a) is not a recording ID but a track ID. See this link:
How did you submit the listen? If this was from a local file, how did it get tagged with the MusicBrainz IDs?