scene view throwing compiler errors

I am working on a game, and when I press play, I get an error saying

ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

When I open this, it goes to the Scene View (Dock Area) scriptable object.

None of my code references the scene view in any way.
Does anybody know what these errors mean, or how to fix them?

 

This thread almost certainly belong in scripting.

What is the stack trace listed in the console? What is the full error text?

 

It belongs in editor and general support more than anything. Getting random errors like this before even adding scripts has become an infrequent and so far impossible to consistently replicate bug since I think late in the 2019 release, with stack traces going incomplete because Unity doesn't really offer full traces up at the level these errors are occurring, near as I can tell.

That said, I've never run into one that affected compilation like this before.