UnityEditor.InspectorWindow.DrawEditors null errors with no trace

I've been getting some mysterious null errors that most often occur right after unity compiles my C# scripts:

 NullReferenceException: Object reference not set to an instance of an object
 UnityEditor.InspectorWindow.DrawEditors (UnityEditor.Editor[] editors) (at <83a73882c51c4602b3d34743827d03e7>:0)
 UnityEditor.InspectorWindow.RebuildContentsContainers () (at <83a73882c51c4602b3d34743827d03e7>:0)
 UnityEditor.InspectorWindow.RedrawFromNative () (at <83a73882c51c4602b3d34743827d03e7>:0)

There is no stack trace pointing to any code, so I don't know how to go about troubleshooting this. This seems to have started pretty randomly (I don't recall installing or importing anything new before this started happening).

I'm using Unity 2019.3.0f3. Any ideas as to what might be causing this?