Guild Wars 2

I generally sell everything I can on the TP, but after I get through maybe half of my items (~10 items), when it try to sell it says “error attempting to sell” so I have to wait a while before I can sell the rest. Is this a known error? Am I doing something wrong? It is a very consistent error, it pretty much always happens whenever I sell more than a few items at once.

I also sell alot on TP and get the same message not all the time but its starting to become more frequent

This happens to me after I sell a bunch of items in rapid succession, not sure why it does it. I have found that going to a WvW starting area solves it and allows me to sell the remainder of my items.

People think its for countering bots, I think its for just messing with people cause any bot can easily avoid it just buy a simple log out and log in or do a few skills and resume the TP.