Chapter- 7! Unable to compile. Error HH600: Compilation failed

[TimeKeyRoll]

Hi there! I am at the start of lesson-7 and can't compile it. its throwing me an Error. Is there anyone who knows how to fix it?

[othaime-en]

This is a compilation error meaning that there is an error in your solidity files. Please share both of them here.

[TimeKeyRoll]

FundMe

//SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import "./PriceConvertor.sol";
using PriceConvertor for uint256;

//gas 958055// const 935561
//transaction cost 833,091 // const 813,531

error NotOwner();

contract FundMe {
    uint256 public constant MINIMUM_USD = 50 * 1e18;

    //cost 813531
    //non const 833103
    address[] public funders;
    mapping(address => uint256) public AddrsstoFunds;
    address public immutable i_owner;

    constructor() {
        i_owner = msg.sender;
        //non 23600
        //immutable 21508
    }

    modifier OnlyOwner() {
        //require(msg.sender ==i_owner, "not owner");
        if (msg.sender != i_owner) {
            revert NotOwner();
        }
        _;
    }

    function fund() public payable {
        require(
            msg.value.GetConversionPrice() >= MINIMUM_USD,
            "not enough funds"
        );
        funders.push(msg.sender);
        AddrsstoFunds[msg.sender] += msg.value;
    }

    function withdrawal() public OnlyOwner {
        (bool sent, ) = payable(msg.sender).call{value: address(this).balance}(
            ""
        );
        require(sent, "not owner");

        for (
            uint256 fundersIndex = 0;
            fundersIndex > funders.length;
            fundersIndex++
        ) {
            address funder = funders[fundersIndex];
            AddrsstoFunds[funder] = 0;
            funders = new address[](0);
        }
    }

    receive() external payable {
        fund();
    }

    fallback() external payable {
        fund();
    }
}

[TimeKeyRoll]

Priceconvertor

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

// address- 0x8A753747A1Fa494EC906cE90E9f37563A8AF630e

library PriceConvertor {
    function getVersion() internal view returns (uint256) {
        AggregatorV3Interface priceFeed = AggregatorV3Interface(
            0x8A753747A1Fa494EC906cE90E9f37563A8AF630e
        );
        return priceFeed.version();
    }

    function getPrice() internal view returns (uint256) {
        AggregatorV3Interface priceFeed = AggregatorV3Interface(
            0x8A753747A1Fa494EC906cE90E9f37563A8AF630e
        );
        (, int256 price, , , ) = priceFeed.latestRoundData();
        return uint256(price * 1e10);
    }

    function GetConversionPrice(uint256 EthAmount)
        internal
        view
        returns (uint256)
    {
        uint256 EthPrice = getPrice();
        uint256 EthPriceinUsd = (EthAmount * EthPrice) / 1e18;
        return EthPriceinUsd;
    }
}

[TimeKeyRoll]

Here is the hardhat config and .json file as well.

[othaime-en]

The error is in your fundme.sol please make sure the statement using PriceConvertor for uint256; is inside the FundMe contract not outside.

[othaime-en]

Rewrite it like this:

//SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import "./PriceConvertor.sol";
using PriceConvertor for uint256; // REMOVE IT FROM HERE


contract FundMe {
    using PriceConvertor for uint256 // ADD IT HERE
    uint256 public constant MINIMUM_USD = 50 * 1e18;