Can't edit a post

I've been trying to edit a post I made in a CAV for a few days now, but every time I hit submit it never goes through and I'm given an error screen/red bar. It's a rather long post with many images and videos and links in it, in case that's relevant info.

@bluejay4: Which post is it?

@rorie:

https://comicvine.gamespot.com/forums/battles-7/teambuster-cav-thanos-causeimbatman-and-ultron-dar-1922828/?page=1

Here you go.