我试图在 remix ide 中编写一个简单的智能合约，并一次又一次地遇到一般错误。 下面是我的代码和错误

Question

Code:-

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

contract FundMe{

    mapping(address => uint256) public addressToAmountFunded;
    address public owner;

    constructor() public {
        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;
    }

    function getVersion() public view returns (uint256){
        AggregatorV3Interface priceFeed = AggregatorV3Interface(0x8A753747A1Fa494EC906cE90E9f37563A8AF630e);
        return priceFeed.version();
    }
    
    function getPrice() public view returns(uint256){
        AggregatorV3Interface priceFeed = AggregatorV3Interface(0x8A753747A1Fa494EC906cE90E9f37563A8AF630e);
        (,int256 answer,,,) = priceFeed.latestRoundData();
         // ETH/USD rate in 18 digit 
         return uint256(answer * 10000000000);
    }
    
    function getConversionRate(uint256 ethAmount) public view returns (uint256){
        uint256 ethPrice = getPrice();
        uint256 ethAmountInUsd = (ethPrice * ethAmount) / 1000000000000000000;
        // the actual ETH/USD conversation rate, after adjusting the extra 0s.
        return ethAmountInUsd;
    }

    function withdraw() payable public {
        require(msg.sender == owner);
        payable(msg.sender).transfer(address(this).balance);

    }

}

Error:-

Gas estimation failed Close Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending? execution reverted

Basically when I am passing any Wei,gwei, or ether in my contract while deploying then I am getting this error otherwise it gets deployed.

Answer 1

While you deploy your contract, your constructor function is called, and it is not marked as payable.

constructor() payable {
    owner = msg.sender;
}

Make it payable and you are good