Error: No deployment found for: MocksV3Aggregator

[Bhavik-punmiya]

I am at 10:51:00 of these video trying to run "yarn hardhat deploy --tags fundme" and I am getting a error "Error: No deployment
found for: MocksV3Aggregator" . I have tried searching the fix for it in these discussion #5061 and #4645 but these didn't work for
me. Please let me know If I have done something wrong by mistake

01-deploy-fund-me

const { network } = require("hardhat")
const { networkConfig, developmentChains } = require("../helper-hardhat-config")
// const { verify } = require("../utils/verify")
require("dotenv").config()

module.exports = async ({ getNamedAccounts, deployments }) => {
    const { deploy, log } = deployments
    const { deployer } = await getNamedAccounts()
    const chainId = network.config.chainId

    let ethUsdPriceFeedAddress
    if (chainId == 31337) {
        const ethUsdAggregator = await deployments.get("MockV3Aggregator")
        ethUsdPriceFeedAddress = ethUsdAggregator.address
    } else {
        ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"]
    }
    log("----------------------------------------------------")
    log("Deploying FundMe and waiting for confirmations...")
    const fundMe = await deploy("FundMe", {
        from: deployer,
        args: [ethUsdPriceFeedAddress],
        log: true,
        // we need to wait if on a live network so we can verify properly
        waitConfirmations: network.config.blockConfirmations || 1,
    })
    log(`FundMe deployed at ${fundMe.address}`)

    if (
        !developmentChains.includes(network.name) &&
        process.env.ETHERSCAN_API_KEY
    ) {
        await verify(fundMe.address, [ethUsdPriceFeedAddress])
    }
}

module.exports.tags = ["all", "fundme"]

Error

PS F:\HardHat Blockchain fcc\Hardhat Fund-me-fcc> yarn hardhat deploy --tags fundme
yarn run v1.22.19
warning package.json: No license field
$ "F:\HardHat Blockchain fcc\Hardhat Fund-me-fcc\node_modules\.bin\hardhat" deploy --tags fundme
Nothing to compile
An unexpected error occurred:

Error: ERROR processing F:\HardHat Blockchain fcc\Hardhat Fund-me-fcc\deploy\01-deploy-fund-me.js:
 Error: No deployment found for: MockV3Aggregator
  

MockV3Aggregator.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "@chainlink/contracts/src/v0.6/tests/MockV3Aggregator.sol";

[heyisrael0x]

Try deploying the mocks

[heyisrael0x]

  try to use this to get the MockV3Aggregator

"" const aggregator = await ethers.getContractFactory("MockV3Aggregator"); ""

[alymurtazamemon]

@Bhavik-punmiya You are using this command yarn hardhat deploy --tags fundme which will only run the fundme deploy script, but because you are running this command on hardhat/localhost due to that your fundme deploy script will access the if block where it needed the MockV3Aggregator contract in order to get the ethUsd price.

You should run only yarn hardhat deploy command in order to run it on hardhat so it can automatically deploy the mocks in the mocks deploy script. Or if you are trying something else then let me know so I can provide you the path.

[Bhavik-punmiya]

Yes I gusess it worked for me , thanks again @alymurtazamemon . Solving my doubts :)

PS F:\HardHat Blockchain fcc\Hardhat Fund-me-fcc> yarn hardhat deploy 
yarn run v1.22.19
warning package.json: No license field
$ "F:\HardHat Blockchain fcc\Hardhat Fund-me-fcc\node_modules\.bin\hardhat" deploy
Nothing to compile
Local Network detected! Deploying mocks..
deploying "MockV3Aggregator" (tx: 0x13ebcf6837eddf2d9fece3ef0e42fe5c67fc92000878547160b60e253f0fd485)...: deployed at 0x5FbDB2315678afecb367f032d93F642f64180aa3 with 569635 gas
Mocks Deployed!!
_____________________________________
----------------------------------------------------
Deploying FundMe and waiting for confirmations...
deploying "FundMe" (tx: 0xb21eab6d375e0478f3cae6193fdfccdd8b9a48af755b36dbd917421196754349)...: deployed at 0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512 with 901264 gas
FundMe deployed at 0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512
Done in 4.00s.