I am following Patrick Collin's smart contract course on youtube and am stuck at the 2hr 46min mark (FundMe.sol) ETH/USD Chainlink price feed on rinkeby.

The code from the video compiles ok but when i try to deploy to rinkeby, my metamask does not pop up and i get the following error:

"creation of FundMe errored: [TIMEOUT] Timeout for call deployMetadataOf from udapp"

Here is the code I am using in REMIX.

// SPDX-License-Identifier: MIT

pragma solidity ^0.6;

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

contract FundMe {

    mapping(address => uint256) public addressToAmountFunded;

    function fund() public payable {
        addressToAmountFunded[msg.sender] += msg.value;
        // what the ETH -> USD conversion rate  

    function getVersion() public view returns (uint256){
        AggregatorV3Interface priceFeed = AggregatorV3Interface(0x8A753747A1Fa494EC906cE90E9f37563A8AF630e);
        return priceFeed.version();

To try and fix the problem I started over creating FundMe.sol from the beginning and changed versions to "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol" incase the one in the video was no longer correct. I also tried to copy paste the entire code instead of just importing.

  • Hi @JMG, what IDE or software are you using when creating and compiling your contract? Are you using remix, VS Code etc? Dec 17, 2021 at 22:56
  • Hi @JMG I just tried your code in remix and I was able to deploy on Rinkeby. Here are the steps, please follow and let me know how you go: 1 - paste code above in remix 2 - compile code 3 - go to remix run tab 4 - change contract drop down to 'FundMe' 5 - ensure environment drop down is set to Injected web3, and that your metamask is connected to Rinkeby 6 - Press the deploy button Dec 19, 2021 at 22:30
  • Hello @Harry, it worked! thanks, I think i must have had my metamask connected to kovan from something earlier in the course.
    – JMG
    Dec 19, 2021 at 23:15
  • Hmm.. wondering what this issue was. If someone can reproduce and come to a conclusion as an answer that would be awesome. Dec 21, 2021 at 23:42

1 Answer 1


I had the same problem and i just deactivated my brave shield/ ad blocker and it worked !

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