When I try to view it I get redirected to page 67.

 

I think it's a deleted post that's causing issues.

In default view, the last post is Blorcyn, post 920517, although there is the next page. Clicking it redirects to the current page.
I went into my options, and edited mine to show 100 posts per page. Blorcyn's is now the last post, and there's no extra page.

 

This is a bug I encounter periodically as well.

I doubt it's a deleted post, as the mods don't delete often, and we can't do it ourselves. I used to think it was automerge, but the last few haven't had that.

 

This looks related, but it's happening on page 24 of the FB thread as well: https://forums.darklordpotter.net/showthread.php?t=24816&page=24.

I've seen this happen on a few other threads occasionally as well. Not a big problem but a bit annoying.