Stability Matrix Checkpoint Manager crashes

[Todgins]

What happened?

1. Open Stability Matrix
2. Open Checkpoint Manager
3. Crash

Have recently moved the install from a older drive, Data Directory was re-directed, have deleted "StabilityMatrix.db" and rebooted to no avail.

Exception Details

Exception

LiteAsyncException: LiteDB encounter an error. Details in the inner exception.
NullReferenceException: Object reference not set to an instance of an object.

Sentry ID

2ea76683

Stack Trace

   at StabilityMatrix.Avalonia.ViewModels.CheckpointsPageViewModel.Refresh()
   at AsyncAwaitBestPractices.SafeFireAndForgetExtensions.HandleSafeFireAndForget[TException](Task task, Boolean continueOnCapturedContext, Action`1 onException)
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state)
   at Avalonia.Threading.SendOrPostCallbackDispatcherOperation.InvokeCore()
   at Avalonia.Threading.DispatcherOperation.Execute()
   at Avalonia.Threading.Dispatcher.ExecuteJob(DispatcherOperation job)
   at Avalonia.Threading.Dispatcher.ExecuteJobsCore(Boolean fromExplicitBackgroundProcessingCallback)
   at Avalonia.Threading.Dispatcher.Signaled()
   at Avalonia.Win32.Win32Platform.WndProc(IntPtr hWnd, UInt32 msg, IntPtr wParam, IntPtr lParam)
   at Avalonia.Win32.Interop.UnmanagedMethods.DispatchMessage(MSG& lpmsg)
   at Avalonia.Win32.Win32DispatcherImpl.RunLoop(CancellationToken cancellationToken)
   at Avalonia.Threading.DispatcherFrame.Run(IControlledDispatcherImpl impl)
   at Avalonia.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at Avalonia.Threading.Dispatcher.MainLoop(CancellationToken cancellationToken)
   at Avalonia.Controls.ApplicationLifetimes.ClassicDesktopStyleApplicationLifetime.StartCore(String[] args)
   at StabilityMatrix.Avalonia.Program.Main(String[] args)```
```   at lambda_method141(Closure, Object)
   at LiteDB.BsonMapper.SerializeObject(Type type, Object obj, Int32 depth)
   at LiteDB.BsonMapper.Serialize(Type type, Object obj, Int32 depth)
   at LiteDB.BsonMapper.ToDocument(Type type, Object entity)
   at LiteDB.BsonMapper.ToDocument[T](T entity)
   at LiteDB.LiteCollection`1.GetBsonDocs(IEnumerable`1 documents)+MoveNext()
   at LiteDB.Engine.LiteEngine.<>c__DisplayClass7_0.<Insert>b__0(TransactionService transaction)
   at LiteDB.Engine.LiteEngine.AutoTransaction[T](Func`2 fn)
   at LiteDB.SharedEngine.Insert(String collection, IEnumerable`1 docs, BsonAutoId autoId)
   at LiteDB.Async.LiteDatabaseAsync.<>c__DisplayClass37_0`1.<EnqueueAsync>g__Function|0()```


### Version

2.14.0

### What Operating System are you using?

Windows

[Todgins]

Fix/workaround.

Backup to another drive and delete "models" folder. Slowly migrate models back and boot the Checkpoint Manager to check for errors.
In my case it was two Loras with bad .cm-info.json files, I imported the .safetensors and used "Edit Metadata" from the Checkpoint Manager to regenerate these.

[NMJohns]

Fix/workaround.

Backup to another drive and delete "models" folder. Slowly migrate models back and boot the Checkpoint Manager to check for errors. In my case it was two Loras with bad .cm-info.json files, I imported the .safetensors and used "Edit Metadata" from the Checkpoint Manager to regenerate these.

How do you identify these bad JSON files?

Nevermind, deleting StabilityMatrix.db resolved my issue.