UnknownError b'' when selling players

[rickyleeyz]

hello.

I am keep on getting this error when selling players using fut_session.sell(item_id=item_id, bid=400, buy_now=sell_price, fast=True)

{'Content-Length': '20', 'X-UnzippedLength': '0', 'Content-Encoding': 'gzip', 'Access-Control-Expose-Headers': 'Retry-After', 'Server': 'Jetty(8.0.0.M2)'} 400 <RequestsCookieJar[]> b'' <class 'fut.exceptions.UnknownError'>

[oczkers]

Server tells You this is bad request so probably some params are wrong or You forget to move item to tradepile first.