A Structure That Can Be Spawned In With Structure Blocks Crashes The Game With Features

An mcstructure file that can be spawned in fine with structure blocks happens to cause the game to crash if trying to use it with feature files.

Basically, I have an mcstructure file - attached below (aspotato.mcstructure) - ... It can be spawned in with structure blocks in a world. And that works fine.

Except, if you try to use feature files to spawn it in - also attached below, as a behaviour pack, note: it will crash your game (aspotatopack.zip) - then the game crashes. No idea why. This shouldn't happen as the mcstructure is clearly valid because it can be spawned in with a structure block just fine.

A screenshot of the structure in question is also attached below (aspotato.png)