This is about as "empty" as I'm going to get my bags! #BattleForAzerothpic.twitter.com/B9ZGsOzdzS
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
I did have nearly 2 million at one point before I started dropping it on Mounts/Pets 
Mostly herbs and glyphs. Plus I leveled a fair few characters up during Legion and funneled all the lower level BoE greens to a bank character to throw onto the AH fairly frequently.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.