I have tried to upload my world that I had ported over from my own private server. I moved my server world into singleplayer, started in to see if things were normal, closed it, bought Realms, and then tried to upload it.

My server world is 237mbs.

Every time I upload, it uploads fine up to "verifying world" then sits there for a long time and then says "Upload Failed! (500)"

I've looked at the other bugs of these that reported the same thing, they say resolved when nothing has been resolved.