aave_borrow.py - self._accounts[key] - list index out of range

[8bcb]

Hey :) I came across following error when running cmd brownie run scripts/aave_borrow.py --network kovan
I guess it worked pretty fine until certain moment and right now accounts list seems to be empty

Here is my config

dependencies:
    - aave/[email protected]
    - smartcontractkit/[email protected]
compiler:
    solc:
        remappings:
            - "@aave=aave/[email protected]"
            - "@chainlink=smartcontractkit/[email protected]"
networks:
    mainnet-fork:
        lending_pool: "0xB53C1a33016B2DC2fF3653530bfF1848a515c8c5"
        weth_token: "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"
        dai_eth_price_feed: "0x773616E4d11A78F511299002da57A0a94577F1f4"
    kovan:
        weth_token: "0xd0a1e359811322d97991e03f863a0c30c2cf029c"
        lending_pool: "0x88757f2f99175387aB4C6a4b3067c77A695b0349"
        dai_eth_price_feed: "0x22B58f1EbEDfCA50feF632bD73368b2FdA96D541"
dotenv: .env
wallets:
    from_key: ${PRIVATE_KEY}

and also regular get_account() function

def get_account():
    if (
        network.show_active() in LOCAL_ENVIRONMENTS
        or network.show_active() in LOCAL_FORK_ENVIRONMENTS
    ):
        return accounts[0]
    else:
        return accounts.add(config["wallets"]["from_key"])

Any idea what can be wrong?

[cromewar]

Hello @asiaziola it seems your get account is returning accounts[0] meaning that it will use the accounts from ganache-cli, but if you are deploying to kovan you would use your account "from_key", make sure kovan is not on LOCAL_ENVIRONMENTS or LOCAL_FORK_ENVIRONMENTS.

Additionally please copy and paste your deploy script here so we can check it.

[8bcb]

Thanks @cromewar ! Removing kovan from LOCAL_ENVIRONMENTS worked for me. However, I guess I really do not have luck with this transaction. I run into another problem which was gas limit being too low, it was already surprising for me but I set it manually to the higher one and another error occurred :)

I fixed it as suggested (with "allow_revert" being set to true) but execution got reverted

Sth is definitely not right :)
Here is the deploy

from brownie import network, config, interface
from scripts.helpful_scripts import get_account, get_contract
from scripts.get_weth import get_weth
from web3 import Web3

amount = Web3.toWei(0.1, "ether")


def main():
    account = get_account()
    network.gas_limit(670000)
    erc20_address = config["networks"][network.show_active()]["weth_token"]
    if network.show_active() in ["mainnet-fork"]:
        get_weth()
    lending_pool = get_lending_pool()
    approve_tx = approve_erc20(amount, lending_pool.address, erc20_address, account)
    print("Depositing...")
    tx = lending_pool.deposit(
        erc20_address,
        amount,
        account.address,
        0,
        {"allow_revert": True, "from": account},
    )
    tx.wait(1)
    borrowable_eth, total_debt = get_borrowable_data(lending_pool, account)

    # dai in terms of ether
    dai_eth_price = get_asset_price(get_contract())


def get_asset_price(dai_eth_price_address):
    # abi
    # addresses
    dai_eth_price_feed = interface.AggregatorV3Interface(dai_eth_price_address)
    latest_price = dai_eth_price_feed.latestRoundData()[1]
    return float(latest_price)


def get_borrowable_data(lending_pool, account):
    (
        total_collateral_eth,
        total_debt_eth,
        available_borrow_eth,
        current_liquidation_threshold,
        ltv,
        health_factor,
    ) = lending_pool.getUserAccountData(account.address)
    available_borrow_eth = Web3.fromWei(available_borrow_eth, "ether")
    total_collateral_eth = Web3.fromWei(total_collateral_eth, "ether")
    total_debt_eth = Web3.fromWei(total_debt_eth, "ether")
    print(f"You have {total_collateral_eth} worth of ETH deposited.")
    print(f"You have {total_debt_eth} worth of ETH borrowed.")
    print(f"You can borrow {available_borrow_eth} worth of ETH.")
    return (float(available_borrow_eth), float(total_debt_eth))


def approve_erc20(amount, spender, erc20_address, account):
    print("Approving ERC20 token...")
    erc20 = interface.IERC20(erc20_address)
    tx = erc20.approve(spender, amount, {"from": account})
    tx.wait(1)
    print("Approved!")
    return tx


def get_lending_pool():
    lending_pool_addresses_provider = interface.ILendingPoolAddressProvider(
        config["networks"][network.show_active()]["lending_pool"]
    )
    lending_pool_address = lending_pool_addresses_provider.getLendingPool()
    lending_pool = interface.ILendingPool(lending_pool_address)
    return lending_pool

Any suggestions will be more than welcome.

[cromewar]

First of all, make sure you have enough ether on your account, use chainlink faucets to get more: https://faucets.chain.link/
and set the gas fee to the original valu ,give it a try.

[8bcb]

I had enough ether but 0 WETH :) so I just run get_weth .py script, received some WETH and now everything seems to work just fine. No idea why there was zero WETH balance as I deployed proper script yesterday, probably did sth with the WETH while practicing. Anyway, thanks for your help!

[cromewar]

I'm glad it helped, feel free to make any other question.

Best regards, Cromewar.