ERZ2 isn't supposed to be a 403 error, no.
Not the entire stage, just that one section. I guess I worded my question wrong (and I'm sorry for that).
Shouldn't the barrier be placed where the player is programmed to walk rather than in the foreground?
I've fixed it... at least I think so. They looked fine when I reloaded the page after posting, and they worked in incognito mode before. They should be up there now.