Lesson 10: Defi & Aave--TypeError: argument of type 'NoneType' is not iterable

[ellyblueeyes]

I am trying to run the script in the terminal but I get this error TypeError: argument of type 'NoneType' is not iterable.
Can anyone help me with this issue?
Thank you in advance.
Below is the entire code.

1.Get-weth.py

from scripts.helpful_scripts import get_account
from brownie import interface, config, network

def main():
get_weth()

def get_weth():
"""
Mints WETH by depositing ETH
"""
#ABI&Address
account=get_account()
weth=interface.IWeth(config["networks"][network.show_active()]["weth_token"])
tx=weth.deposit({"from": account, "value":0.1*10**18})
print("Received 0.1 WETH")
return tx

2.Helpful-scripts.py
from brownie import accounts, network, config

LOCAL_BLOCKCHAIN_ENVIRONMENTS = [
"development",
"ganache",
"hardhat",
"local-ganache",
"mainnet-fork",
]

def get_account(index=None, id=None):
if index:
return accounts[index]
if network.show_active() in LOCAL_BLOCKCHAIN_ENVIRONMENTS:
return accounts[0]
if id:
return accounts.load(id)
if network.show_active() in config["networks"]:
return accounts.add(config["wallets"]["from_key"])
return None

3.Brownie-config.yaml
dependencies:

• aave/[email protected]
  compiler:
  solc:
  remappings:
  • '@aave=aave/[email protected]'
    dotenv: .env
    networks:
    default: mainnet-fork
    goerli:
    weth_token: "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6"
    mainnet-fork:
    weth_token: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
    wallets:
    from_key: ${PRIVATE_KEY}

4.env
export PRIVATE_KEY = "0x753aa243016b908fc6f7c21964201f11c1bf46cca2fe2ba2359cfeff9bbed00e"
export WEB3_ALCHEMY_PROJECT_ID = "gP4XRpmUZxWsPV7gbb6X0EViwq9tnzCO"
export ETHERSCAN_TOKEN = DPGZQ3V1B593F8FX4X1YETVU7WKY8PG9BV

5. IWeth.sol
   pragma solidity ^0.4.19;

interface IWeth {
function allowance(address owner, address spender) external view returns (uint256 remaining);
function approve(address spender, uint256 value) external returns (bool success);
function balanceOf(address owner) external view returns (uint256 balance);
function decimals() external view returns (uint8 decimalPlaces);
function name() external view returns (string memory tokenName);
function symbol() external view returns (string memory tokenSymbol);
function totalSupply() external view returns (uint256 totalTokensIssued);
function transfer(address to, uint256 value) external returns (bool success);
function transferFrom(address from, address to, uint256 value) external returns (bool success);
function deposit() external;
function withdraw(uint wad) external;
}

[Parviz666]

How is it possible to find the forgotten TrustVolt code?