Current Server won't export to Realms

I just paid for a subscription for a 2 person Realm. I was able to load up the newly generated world in the Realm, but when I went to upload my current world (84.4 MB) to the new Realm, there was an error exporting it. Error continued even after restart of game, restart of console, and creating a copy of the world and attempting to export that one to realms instead.