"execution reverted: Insufficient WETH9" on Polygon

[Lv5Electro]

Describe the bug
I want to transfer AMP to MATIC(not WMATIC)，but I got a error

Traceback (most recent call last):
  File "D:\uniswap-python\examples\qyx_test.py", line 29, in <module>
    data = uniswap.make_trade(amp, matic, qty=qty, slippage=0.1, fee=3000)
  File "D:\uniswap-python\uniswap\decorators.py", line 38, in approved
    return method(self, *args, **kwargs)
  File "D:\uniswap-python\uniswap\uniswap.py", line 473, in make_trade
    input_token, qty, recipient, fee, slippage, fee_on_transfer
  File "D:\uniswap-python\uniswap\uniswap.py", line 690, in _token_to_eth_swap_input
    self._get_tx_params(),
  File "D:\uniswap-python\uniswap\uniswap.py", line 1443, in _build_and_send_tx
    transaction = function.build_transaction(tx_params)
  File "D:\uniswap-python\venv\lib\site-packages\web3\contract\contract.py", line 340, in build_transaction
    **self.kwargs,
  File "D:\uniswap-python\venv\lib\site-packages\web3\contract\utils.py", line 232, in build_transaction_for_function
    prepared_transaction = fill_transaction_defaults(w3, prepared_transaction)
  File "cytoolz\\functoolz.pyx", line 263, in cytoolz.functoolz.curry.__call__
  File "D:\uniswap-python\venv\lib\site-packages\web3\_utils\transactions.py", line 132, in fill_transaction_defaults
    default_val = default_getter(w3, transaction)
  File "D:\uniswap-python\venv\lib\site-packages\web3\_utils\transactions.py", line 72, in <lambda>
    "gas": lambda w3, tx: w3.eth.estimate_gas(tx),
  File "D:\uniswap-python\venv\lib\site-packages\web3\eth\eth.py", line 293, in estimate_gas
    return self._estimate_gas(transaction, block_identifier)
  File "D:\uniswap-python\venv\lib\site-packages\web3\module.py", line 74, in caller
    method_str, params, error_formatters, null_result_formatters
  File "D:\uniswap-python\venv\lib\site-packages\web3\manager.py", line 251, in request_blocking
    response, params, error_formatters, null_result_formatters
  File "D:\uniswap-python\venv\lib\site-packages\web3\manager.py", line 209, in formatted_response
    apply_error_formatters(error_formatters, response)
  File "D:\uniswap-python\venv\lib\site-packages\web3\manager.py", line 85, in apply_error_formatters
    formatted_resp = pipe(response, error_formatters)
  File "cytoolz\\functoolz.pyx", line 680, in cytoolz.functoolz.pipe
  File "cytoolz\\functoolz.pyx", line 655, in cytoolz.functoolz.c_pipe
  File "D:\uniswap-python\venv\lib\site-packages\web3\_utils\contract_error_handling.py", line 139, in raise_contract_logic_error_on_revert
    raise ContractLogicError(message, data=data)
web3.exceptions.ContractLogicError: execution reverted: Insufficient WETH9

To Reproduce
this is my code

w3 = Web3(Web3.HTTPProvider('https://rpc-mainnet.maticvigil.com',
                            request_kwargs={"proxies": proxies}))
w3.middleware_onion.inject(geth_poa_middleware, layer=0)

uniswap = Uniswap(address=address, private_key=private_key, version=3, web3=w3)

qty = 5 * 10 ** 18

amp = w3.to_checksum_address("0x0621d647cecbFb64b79E44302c1933cB4f27054d")
matic = w3.to_checksum_address("0x0000000000000000000000000000000000001010")

data = uniswap.make_trade(amp, matic, qty=qty, slippage=0.1, fee=3000)
print(data)

Additional context
I set in the constants.py ETH_ADDRESS = "0x0000000000000000000000000000000000001010"

[liquid-8]

Hi! Does it work as intended if you swap the token for a wrapped matic? I haven't touched alt networks for aeons, but I remember some weird issues regarding swaps from/to native tokens.

[Lv5Electro]

Hi! Does it work as intended if you swap the token for a wrapped matic? I haven't touched alt networks for aeons, but I remember some weird issues regarding swaps from/to native tokens.

I tried, but it transferred to WMATIC instead of MATIC

[liquid-8]

I would just swap token<->wmatic then unwrapping manually when needed. Basically, uni v2/v3 router calls don't swap for native tokens directly, but for wrapped first and then unwrap, so it's pretty the same. IIRC, there is a call for wrapping/unwrapping native tokens in router's contract, check ABI out.

[liquid-8]

Btw, try to set WETH9_ADDRESS in ./constants.py to 0x0d500b1d8e8ef31e21c99d1db9a6444d3adf1270