MigrateKeyframeData Migration error during upgrade to 10.11.0

[marmata75]

Hi all,

Just realized there's a new version of Jellyfin server so jumped straight away to upgrade! I'm using 10.10.7 happily, installed in a debian trixie  LXC container. I stopped jellyfin, upgraded it, restarted and the migration stops here:

Code:

[2025-10-20 07:43:32.985 +02:00] [INF] Perform migration "20250421000000_MigrateKeyframeData"
[2025-10-20 07:43:33.037 +02:00] [INF] Checking 65149 items for importable keyframe data.
[2025-10-20 07:43:34.115 +02:00] [INF] Checked: 5000 - Imported: 81 - Time: 00:00:01.1282475
[2025-10-20 07:43:34.962 +02:00] [FTL] Error: "The input does not contain any JSON tokens. Expected the input to start with a valid JSON token, when isFinalBlock is true. Path: $ | LineNumber: 0 | BytePositionInLine: 0."
[2025-10-20 07:43:34.962 +02:00] [ERR] Migration "20250421000000_MigrateKeyframeData" failed
System.Text.Json.JsonException: The input does not contain any JSON tokens. Expected the input to start with a valid JSON token, when isFinalBlock is true. Path: $ | LineNumber: 0 | BytePositionInLine: 0.
---> System.Text.Json.JsonReaderException: The input does not contain any JSON tokens. Expected the input to start with a valid JSON token, when isFinalBlock is true. LineNumber: 0 | BytePositionInLine: 0.
  at System.Text.Json.ThrowHelper.ThrowJsonReaderException(Utf8JsonReader& json, ExceptionResource resource, Byte nextByte, ReadOnlySpan`1 bytes)
  at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
  --- End of inner exception stack trace ---
  at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, JsonReaderException ex)
  at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
  at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
  at System.Text.Json.JsonSerializer.Deserialize[TValue](ReadOnlySpan`1 utf8Json, JsonSerializerOptions options)
  at Jellyfin.Server.Migrations.Routines.MigrateKeyframeData.TryGetKeyframeData(Guid id, String path, KeyframeData& data)
  at Jellyfin.Server.Migrations.Routines.MigrateKeyframeData.Perform()
  at Jellyfin.Server.Migrations.Stages.CodeMigration.Perform(IServiceProvider serviceProvider, IStartupLogger logger, CancellationToken cancellationToken)
  at Jellyfin.Server.Migrations.JellyfinMigrationService.InternalCodeMigration.PerformAsync(IStartupLogger logger)
  at Jellyfin.Server.Migrations.JellyfinMigrationService.MigrateStepAsync(JellyfinMigrationStageTypes stage, IServiceProvider serviceProvider)
[2025-10-20 07:43:34.973 +02:00] [INF] Attempt to rollback librarydb.
[2025-10-20 07:43:34.973 +02:00] [INF] Attempt to rollback JellyfinDb.
[2025-10-20 07:43:35.095 +02:00] [FTL] Error while starting server
System.Text.Json.JsonException: The input does not contain any JSON tokens. Expected the input to start with a valid JSON token, when isFinalBlock is true. Path: $ | LineNumber: 0 | BytePositionInLine: 0.
---> System.Text.Json.JsonReaderException: The input does not contain any JSON tokens. Expected the input to start with a valid JSON token, when isFinalBlock is true. LineNumber: 0 | BytePositionInLine: 0.
  at System.Text.Json.ThrowHelper.ThrowJsonReaderException(Utf8JsonReader& json, ExceptionResource resource, Byte nextByte, ReadOnlySpan`1 bytes)
  at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
  --- End of inner exception stack trace ---
  at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, JsonReaderException ex)
  at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
  at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
  at System.Text.Json.JsonSerializer.Deserialize[TValue](ReadOnlySpan`1 utf8Json, JsonSerializerOptions options)
  at Jellyfin.Server.Migrations.Routines.MigrateKeyframeData.TryGetKeyframeData(Guid id, String path, KeyframeData& data)
  at Jellyfin.Server.Migrations.Routines.MigrateKeyframeData.Perform()
  at Jellyfin.Server.Migrations.Stages.CodeMigration.Perform(IServiceProvider serviceProvider, IStartupLogger logger, CancellationToken cancellationToken)
  at Jellyfin.Server.Migrations.JellyfinMigrationService.InternalCodeMigration.PerformAsync(IStartupLogger logger)
  at Jellyfin.Server.Migrations.JellyfinMigrationService.MigrateStepAsync(JellyfinMigrationStageTypes stage, IServiceProvider serviceProvider)
  at Jellyfin.Server.Migrations.JellyfinMigrationService.MigrateStepAsync(JellyfinMigrationStageTypes stage, IServiceProvider serviceProvider)
  at Jellyfin.Server.Migrations.JellyfinMigrationService.MigrateStepAsync(JellyfinMigrationStageTypes stage, IServiceProvider serviceProvider)
  at Jellyfin.Server.Program.StartServer(IServerApplicationPaths appPaths, StartupOptions options, IConfiguration startupConfig)

Full log is here on pastebin if needed!
Any hint on what is going wrong?