Guild Wars 2

Hey everyone, i have been having an error lately where while i am selling things at the trading company after so many items are sold there is an error, normally it isn’t an issue because i can just wait a minute and it works. Well now just recently when i did this the game booted me and said it has crashed. This is starting to get frustrating for me since after recently buying this game i have encountered error after error and this is only the newest one on a long list, so any assistance would be appreciated.

I am not sure if this is an error or simply some type of security measure but i’d appreciate if someone responded or the very least gave me a clue as to what it is.