An error has occurred in UserUpdateTimerCallback

[errror]

This issue respects the following points:

• This is a bug, not a question or a configuration issue; Please visit our forum or chat rooms first to troubleshoot with volunteers, before creating a report. The links can be found here.
• This issue is not already reported on GitHub (I've searched it).
• I'm using an up to date version of Jellyfin Server stable, unstable or master; We generally do not support previous older versions. If possible, please update to the latest version before opening an issue.
• I agree to follow Jellyfin's Code of Conduct.
• This report addresses only a single issue; If you encounter multiple issues, kindly create separate reports for each one.

Description of the bug

Since upgrading to Jellyfin 10.10, the error An error has occurred in UserUpdateTimerCallback shows up in the logs, whenever a replay is stopped.

Reproduction steps

1. Start a playback.
2. Stop it.
3. Error shows up in the logs.

What is the current bug behavior?

The messages mentions in the logs section are shown in the log.

What is the expected correct behavior?

The log should only report, that the playback has stopped, but not an error in UserUpdateTimerCallback and corresponding Exception and backtrace.

Jellyfin Server version

10.10.0+

Specify commit id

No response

Specify unstable release number

No response

Specify version number

No response

Specify the build version

10.10.1

Environment

- OS: Debian 12
- Linux Kernel: 6.1.0-27-amd64
- Virtualization: systemd-nspawn
- Clients: Browser, Android, FireTV
- Browser: Firefox 128.4.0esr (64-bit)
- FFmpeg Version: 7.0.2-5-bookworm
- Playback Method: DirectPlay
- Hardware Acceleration: none
- GPU Model: none
- Plugins:
 - Kodi Sync Queue 13.0.0.0
 - LDAP-Auth 19.0.0.0
 - Playback Reporting 15.0.0.0
 - Reports 17.0.0.0
 - TheTVDB 18.0.0.0
 - TMDb Box Sets 11.0.0.0
 - TVmaze 11.0.0.0
 - Webhook 15.0.0.0
 - TMDb 10.10.1.0
 - Studio Images 10.10.1.0
 - OMDb 10.10.1.0
 - MusicBrainz 10.10.1.0
 - AudioDB 10.10.1.0
- Reverse Proxy: apache
- Base URL: none
- Networking: Host, Nat
- Storage: local

Jellyfin logs

Nov 11 21:52:58 media jellyfin[48061]: [21:52:58] [INF] Playback stopped reported by app Android TV 0.17.9 playing Die Bounty. Stopped at 3135133 ms
Nov 11 21:52:58 media jellyfin[48061]: [21:52:58] [INF] Playback stop tracker found, processing stop : aab8879beaf04362dcfa80c42b877d3b7c1cb49a-dd99268c2eef4d659207c675967d3f05-e9db1d38d619637817dfcb7bd>
Nov 11 21:52:58 media jellyfin[48061]: [21:52:58] [INF] PlaybackTracker : Adding Stop Event : 11/11/2024 21:52:58
Nov 11 21:52:58 media jellyfin[48061]: [21:52:58] [INF] Playback stop but TrackedPlaybackInfo not found! not storing activity in DB
Nov 11 21:52:58 media jellyfin[48061]: [21:52:58] [INF] Started user data sync
Nov 11 21:52:58 media jellyfin[48061]: [21:52:58] [ERR] An error has occurred in UserUpdateTimerCallback
Nov 11 21:52:58 media jellyfin[48061]: System.InvalidCastException: Unable to cast object of type 'System.Guid' to type 'System.String'.
Nov 11 21:52:58 media jellyfin[48061]:    at lambda_method1263(Closure, Object, Object)
Nov 11 21:52:58 media jellyfin[48061]:    at LiteDB.BsonMapper.DeserializeObject(EntityMapper entity, Object obj, BsonDocument value)
Nov 11 21:52:58 media jellyfin[48061]:    at LiteDB.BsonMapper.Deserialize(Type type, BsonValue value)
Nov 11 21:52:58 media jellyfin[48061]:    at LiteDB.LiteQueryable`1.<ToEnumerable>b__27_2(BsonDocument x)
Nov 11 21:52:58 media jellyfin[48061]:    at System.Linq.Enumerable.SelectEnumerableIterator`2.ToList()
Nov 11 21:52:58 media jellyfin[48061]:    at Jellyfin.Plugin.KodiSyncQueue.Data.DbRepo.SetUserInfoSync(List`1 dtos, List`1 itemRefs, String userId)
Nov 11 21:52:58 media jellyfin[48061]:    at Jellyfin.Plugin.KodiSyncQueue.EntryPoints.UserSyncNotification.SaveUserChanges(List`1 dtos, List`1 itemRefs, String userName, String userId)
Nov 11 21:52:58 media jellyfin[48061]:    at Jellyfin.Plugin.KodiSyncQueue.EntryPoints.UserSyncNotification.SendNotifications(IEnumerable`1 changes, List`1 itemRefs, CancellationToken cancellationToken)
Nov 11 21:52:58 media jellyfin[48061]:    at Jellyfin.Plugin.KodiSyncQueue.EntryPoints.UserSyncNotification.UpdateTimerCallback(Object state)

FFmpeg logs

Client / Browser logs

No response

Relevant screenshots or videos

No response

Additional information

No response

[errror]

I disabled the kodisyncqueue plugin a few days ago. Since then, the error was not reported any more. So it definitely has something to do with kodisyncqueue. Any news about my report?

[crobibero]

#99

[errror]

The workaround described by @querty12 in #99 was working for me, too.