Stockfish 11 bugging out for some reason?

So today I was experimenting with board editor to see what was the longest helpmate possible. I loaded up the board with bishops and pawns and hit Analysis Board.
This happened:

I'm no coder, does anyone know what that error means?

So I switched to SF 11 HCE and pressed Analysis again.

I saw this:

There are legal moves available, so is it just that Lichess has removed support for HCE 11 and not removed the option or is this just a waste of time as this is unreachable?