Failing to create sell orders

[pudjojotaro]

Ok, so I'm using the same code that worked fine 6 months ago, using the default create_sell_order function. I get past the login and getting the inventory, I get the correct item IDs, but when I call the create_sell_order I get a response saying "There was a problem listing your item. Refresh the page and try again"

Any suggestions why this might be happening? Thanks in advance.