In 2019, I get an error when I go from one scene to another. I did not get this in 2018

I get this error I've never seen before when I go from one scene to another in 2019:

Code (CSharp):

1. SerializedObject target has been destroyed.
2. 0x00007FF6B1D493CC (Unity) StackWalker::GetCurrentCallstack
3. 0x00007FF6B1D4C881 (Unity) StackWalker::ShowCallstack
4. 0x00007FF6B04B8695 (Unity) GetStacktrace
5. 0x00007FF6B2766C60 (Unity) DebugStringToFile
6. 0x00007FF6B00473B3 (Unity) SerializedObject::ValidateObjectReferences
7. 0x00007FF6B0045FCE (Unity) SerializedObject::Update
8. 0x00007FF6B0D7801E (Unity) SerializedObject_CUSTOM_Update
9. 0x0000026DAA04F293 (Mono JIT Code) (wrapper managed-to-native) UnityEditor.SerializedObject:Update (UnityEditor.SerializedObject)
10. 0x0000026DAA0C6BE3 (Mono JIT Code) [LightingSettingsInspector.cs:162] UnityEditor.LightingSettingsInspector:RenderMeshSettings (bool)
11. 0x0000026DAA0B8353 (Mono JIT Code) [MeshRendererEditor.cs:58] UnityEditor.MeshRendererEditor:LightingFieldsGUI ()
12. 0x0000026DAA0B316B (Mono JIT Code) [MeshRendererEditor.cs:96] UnityEditor.MeshRendererEditor:OnInspectorGUI ()
13. 0x0000026DAA085838 (Mono JIT Code) [InspectorElement.cs:446] UnityEditor.UIElements.InspectorElement/<CreateIMGUIInspectorFromEditor>c__AnonStorey1:<>m__0 ()
14. 0x0000026DA5AD4A31 (Mono JIT Code) [IMGUIContainer.cs:278] UnityEngine.UIElements.IMGUIContainer:DoOnGUI (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,bool,UnityEngine.Rect)
15. 0x0000026DA5AD2813 (Mono JIT Code) [IMGUIContainer.cs:480] UnityEngine.UIElements.IMGUIContainer:HandleIMGUIEvent (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect)
16. 0x0000026DA9D98583 (Mono JIT Code) [IMGUIContainer.cs:455] UnityEngine.UIElements.IMGUIContainer:HandleIMGUIEvent ()
17. 0x0000026DA9D97A12 (Mono JIT Code) [UIRenderers.cs:447] UnityEngine.UIElements.UIR.ImmediateRenderer:Draw (UnityEngine.UIElements.UIR.DrawChainState)
18. 0x0000026DA9D96580 (Mono JIT Code) [UIRenderDevice.cs:842] UnityEngine.UIElements.UIR.UIRenderDevice:ContinueChain (UnityEngine.UIElements.UIR.RendererBase,UnityEngine.UIElements.UIR.DrawChainState,bool)
19. 0x0000026DAF713BEB (Mono JIT Code) [UIRenderers.cs:420] UnityEngine.UIElements.UIR.ZoomPanRenderer:Draw (UnityEngine.UIElements.UIR.DrawChainState)
20. 0x0000026DA9D96580 (Mono JIT Code) [UIRenderDevice.cs:842] UnityEngine.UIElements.UIR.UIRenderDevice:ContinueChain (UnityEngine.UIElements.UIR.RendererBase,UnityEngine.UIElements.UIR.DrawChainState,bool)
21. 0x0000026DA9D910DB (Mono JIT Code) [UIRenderDevice.cs:825] UnityEngine.UIElements.UIR.UIRenderDevice:DrawChain (UnityEngine.UIElements.UIR.RendererBase,UnityEngine.Rect,UnityEngine.Matrix4x4,UnityEngine.Texture)
22. 0x0000026DA9D8C407 (Mono JIT Code) [UIRRepaintUpdater.cs:219] UnityEngine.UIElements.UIRRepaintUpdater:DrawChain (UnityEngine.Rect,UnityEngine.Matrix4x4)
23. 0x0000026DA9D57B55 (Mono JIT Code) [UIRRepaintUpdater.cs:191] UnityEngine.UIElements.UIRRepaintUpdater:Update ()
24. 0x0000026DA9D5508F (Mono JIT Code) [VisualTreeUpdater.cs:71] UnityEngine.UIElements.VisualTreeUpdater:UpdateVisualTree ()
25. 0x0000026DA9D54B53 (Mono JIT Code) [Panel.cs:591] UnityEngine.UIElements.Panel:Repaint (UnityEngine.Event)
26. 0x0000026DA5AA7AE3 (Mono JIT Code) [UIElementsUtility.cs:246] UnityEngine.UIElements.UIElementsUtility:DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel)
27. 0x0000026DA5AA762B (Mono JIT Code) [UIElementsUtility.cs:78] UnityEngine.UIElements.UIElementsUtility:ProcessEvent (int,intptr)
28. 0x0000026DA5AA6F8E (Mono JIT Code) [GUIUtility.cs:179] UnityEngine.GUIUtility:ProcessEvent (int,intptr)
29. 0x0000026DA5AA71B3 (Mono JIT Code) (wrapper runtime-invoke) <Module>:runtime_invoke_bool_int_intptr (object,intptr,intptr,intptr)
30. 0x00007FFE395ABBCB (mono-2.0-bdwgc) [mini-runtime.c:2809] mono_jit_runtime_invoke
31. 0x00007FFE39532252 (mono-2.0-bdwgc) [object.c:2919] do_runtime_invoke
32. 0x00007FFE3953B25F (mono-2.0-bdwgc) [object.c:2966] mono_runtime_invoke
33. 0x00007FF6B1CDB036 (Unity) scripting_method_invoke
34. 0x00007FF6B1CD5335 (Unity) ScriptingInvocation::Invoke
35. 0x00007FF6B1CD05AA (Unity) ScriptingInvocation::Invoke<bool>
36. 0x00007FF6AF461C79 (Unity) Scripting::UnityEngine::GUIUtilityProxy::ProcessEvent
37. 0x00007FF6B03615EC (Unity) GUIView::ProcessRetainedMode
38. 0x00007FF6B07C4B6D (Unity) GUIView::OnInputEvent
39. 0x00007FF6B03614FC (Unity) GUIView::ProcessInputEvent
40. 0x00007FF6B07BBC8C (Unity) GUIView::DoPaint
41. 0x00007FF6B07C75AD (Unity) GUIView::RepaintAll
42. 0x00007FF6B0506E52 (Unity) PlayerLoopController::UpdateScene
43. 0x00007FF6B0503CA9 (Unity) Application::TickTimer
44. 0x00007FF6B07C3943 (Unity) MainMessageLoop
45. 0x00007FF6B07CD347 (Unity) WinMain
46. 0x00007FF6B30FDD8E (Unity) __scrt_common_main_seh
47. 0x00007FFE65F24034 (KERNEL32) BaseThreadInitThunk
48. 0x00007FFE666E3691 (ntdll) RtlUserThreadStart

How do I troubleshoot this? None of the stack trace references my code

 

I upgraded from the previous unity 2019 to the latest 2019 and deleted my Library directory, and this error went away.

Still, it would be SUPER useful if someone from unity would chime in. I'm getting a lot of stack traces like this in 2019 that give me no ability to troubleshoot errors. I'm sure there's a problem in this here with one of MY game objects, but the error doesn't let me know which.