Why is the eth/usd contract not marked as a valid ETH address ? I get a Value error constructor when I try to run deploy script on mainnet-fork

Question

I am following Patrick Alpha's brownie tutorial using python visual studio: https://www.youtube.com/watch?v=M576WGiDBdQ (at around the 5:57 mark). I am using brownie and am trying to run my python deploy script : brownie run scripts/deploy.py --network mainnet-fork.

When I run it, I get : ValueError: constructor '{'eth_usd_price_feed': '0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419', 'verify': False}' - '{'eth_usd_price_feed': '0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419', 'verify': False}' is not a valid ETH address Terminating local RPC client...

"The desired output is getting another value error telling me I don't have enough gas......"

Here are the relevant contracts and scripts...

This is my brownie-config.yam; file:

dependencies:
  # - <organization/repo>@<version>
  - smartcontractkit/chainlink-brownie-contracts@1.1.1
compiler:
  solc:
    remappings:
      - '@chainlink=smartcontractkit/chainlink-brownie-contracts@1.1.1'
dotenv: .env
networks:
  default: development
  rinkeby:
    eth_usd_price_feed: '0x8A753747A1Fa494EC906cE90E9f37563A8AF630e'
    verify: True
  mainnet-fork:
    eth_usd_price_feed: '0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419'
    verify: False
  development:
    verify: False
  ganache-local:
    verify: False
wallets:
  from_key: ${PRIVATE_KEY}

I copied this directly from the github..

Now, here is the FundMe.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.6;

import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol";
import "@chainlink/contracts/src/v0.6/vendor/SafeMathChainlink.sol";

contract FundMe {
    using SafeMathChainlink for uint256;

    mapping(address => uint256) public addressToAmountFunded;
    address[] public funders;
    address public owner;
    AggregatorV3Interface public priceFeed;
    
    // if you're following along with the freecodecamp video
    // Please see https://github.com/PatrickAlphaC/fund_me
    // to get the starting solidity contract code, it'll be slightly different than this!
    constructor(address _priceFeed) public {
        priceFeed = AggregatorV3Interface(_priceFeed);
        owner = msg.sender;
    }

    function fund() public payable {
        uint256 minimumUSD = 50 * 10**18;
        require(
            getConversionRate(msg.value) >= minimumUSD,
            "You need to spend more ETH!"
        );
        addressToAmountFunded[msg.sender] += msg.value;
        funders.push(msg.sender);
    }

    function getVersion() public view returns (uint256) {
          

        return priceFeed.version();
    }

    function getPrice() public view returns (uint256) {
        (, int256 answer, , , ) = priceFeed.latestRoundData();
        return uint256(answer * 10000000000);
    }

    // 1000000000
    function getConversionRate(uint256 ethAmount)
        public
        view
        returns (uint256)
    {
        uint256 ethPrice = getPrice();
        uint256 ethAmountInUsd = (ethPrice * ethAmount) / 1000000000000000000;
        return ethAmountInUsd;
    }

    function getEntranceFee() public view returns (uint256) {
        // minimumUSD
        uint256 minimumUSD = 50 * 10**18;
        uint256 price = getPrice();
        uint256 precision = 1 * 10**18;
        // return (minimumUSD * precision) / price;
        // We fixed a rounding error found in the video by adding one!
        return ((minimumUSD * precision) / price) + 1;
    }

    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }

    function withdraw() public payable onlyOwner {
        msg.sender.transfer(address(this).balance);

        for (
            uint256 funderIndex = 0;
            funderIndex < funders.length;
            funderIndex++
        ) {
            address funder = funders[funderIndex];
            addressToAmountFunded[funder] = 0;
        }
        funders = new address[](0);
    }
}

Here is the helpful script

from brownie import network, config, accounts, MockV3Aggregator
from web3 import Web3

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


DECIMALS = 8
STARTING_PRICE = 200000000000

def get_account():
    
    if network.show_active() in LOCAL_BLOCKCHAIN_ENVIRONMENTS: 

        return accounts[0]
    else:
        return accounts.add(config["wallets"]["from_key"])
    
    
def deploy_mocks():
    print(f"The active  network is { network.show_active() }")
    print("Deploying Mocks.....")
    if len(MockV3Aggregator) <= 0: #list of all v3 aggregators we've deployed
        MockV3Aggregator.deploy(DECIMALS, STARTING_PRICE, {"from": get_account()})
    print("Mocks Deployed") #use tge most recently deployed mock agregator