I've read through the material quite a few times yet I'm not understanding why I get this message when I try to "/rbe" almost anywhere open enough to try. I'm already having an issue trying to fix the paste height of the base, but this is hindering my testing. Any logic to this?

You can't spawn it on top of a player, including yourself. So you'll need to move away from where you're trying to spawn it at.

Oh... I had to fly fairly up to spawn it. I appreciate you're help! It didn't occure to me why sometimes it would spawn, other times it gave me this error.

Np, I'll add a message for it since it's confusing a lot of people.