bug: Navidrome fails to send scrobbles to Multi Scrobbler

[lucas-dclrcq]

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Describe the Bug

Hi,

I'm trying to configure Music Scrobbler as a Listenbrainz endpoint for Navidrome to send scrobbles but it fails sending the now playing and keeps re-trying.

There is no apparent error in the multi scrobbler logs (I enabled the debug mode), but I see the following error in Navidrome's logs :

time="2025-10-31T13:30:32Z" level=warning msg="ListenBrainz Scrobble returned HTTP error" error="invalid character 'O' looking for beginning of value" track="Float On"

Is it possible that the response sent by multi scrobbler is not what navidrome expects ?

Platform

Docker

Versions

• Navidrome : 0.58.0
• Multi scrobbler : v0.10.1

Logs

time="2025-10-31T13:37:38Z" level=debug msg="Sending scrobble" artist="Modest Mouse" scrobbler=listenbrainz track="Float On"
time="2025-10-31T13:37:38Z" level=warning msg="ListenBrainz Scrobble returned HTTP error" error="invalid character 'O' looking for beginning of value" track="Float On"
time="2025-10-31T13:37:38Z" level=warning msg="Could not send scrobble. Will be retried" artist="Modest Mouse" error="invalid character 'O' looking for beginning of value\nretry later" scrobbler=listenbrainz track="Float On" userId=6a337a4a-349a-4c71-854a-541aa3e8fe99

Additional Context

No response

[FoxxMD]

Thanks for the report, I'll check on this soon.

[FoxxMD]

Please give me some more information on your setup:

• How are you configuring Navidrome for a custom listenbrainz URL?
  • If you are using ND_LISTENBRAINZ_BASEURL, what URL are you using for MS?
• Did you configure a token in Navidrome using the "Scrobble to Listenbrainz" toggle in settings? Was this successful?
• Please post an example of your MS Listenbrainz Endpoint configuration. Either the ENVS or the json file

[FoxxMD]

Actually I think I got it figured out without that. Please try this docker image: foxxmd/multi-scrobbler:pr-382

Make sure the navidrome ENV ND_LISTENBRAINZ_BASEURL is set to http://myMultiScrobblerIP:9078/1/ or whatever your equivalent address would be.

[FoxxMD]

Hi @lucas-dclrcq have you had a chance to test this?

[lucas-dclrcq]

I just tried it, it works ! Both now playing and scrobble are working now.