Here is my code

`from uniswap import Uniswap
from web3 import Web3
from decimal import *

wallet_address = "xxx"
private_key = "yyy"
address = Web3.toChecksumAddress(wallet_address)
version = 2

bsc = "https://bsc-dataseed.binance.org/"
web3 = Web3(Web3.HTTPProvider(bsc))
print(web3.isConnected())
uniswap = Uniswap(address=address, private_key=private_key, version=version, web3=web3, default_slippage=.5)

wbnb = "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c"
token = "0xa872960bc3393b2a19aa1e784ab7f385d543ce37"

wbnb_w = Web3.toChecksumAddress(wbnb)
token_w = Web3.toChecksumAddress(token)

qty = int(.01 * 10**18)
decimals_wbnb = uniswap.get_token(wbnb_w).decimals
decimals_token = uniswap.get_token(token_w).decimals

uniswap.make_trade(wbnb_w, token_w, qty) # THIS WORKS

qty_token = uniswap.get_token_balance(token_w)
print(qty_token)

uniswap.make_trade(token_w, wbnb_w, qty_token) # DOESN'T WORK
`

In this link, it's written that the problem can be slippage.
https://www.followchain.org/pancake-k-pancakeswap/

Here there is the transaction
https://bscscan.com/tx/0x472895b975f80c38c9bc87f29902ab35add7f312b64ead6c2b20fffbf8a04c61

I already saw that slippage is not tested. My question is: there are some problems in my code, or it can be a problem of slippage?

I apologize if the problem is trivial, but I'm just beginning :D