Lesson 7 : Error: No deployment found for: MockV3Aggregator

[zulfi984]

i deployed mock and it's running, but when i deploy fundme, I'm getting this error.

Error: ERROR processing /home/zulfi984/hardhat-fund-me/deploy/01-deploy-fund-me.js:
Error: No deployment found for: MockV3Aggregator

01-deploy-fund-me.js

const { networkConfig, developmentChains } = require("../helper-hardhat-config")
const { getNamedAccounts, deployments, network } = require("hardhat")

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

    let ethUsdPriceFeedAddress
    if (developmentChains.includes(network.name)) {
        const ethUsdAggregator = await deployments.get("MockV3Aggregator")
        ethUsdPriceFeedAddress = ethUsdAggregator.address
    } else {
        ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"]
    }
    log("----------------------------------------------------")
    log("Deploying FundMe and waiting for confirmations...")
    ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"]
    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
    })
}

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

i tried

if (chainId == 31337)

instead of

 if (developmentChains.includes(network.name))

but still, shows same error

[alymurtazamemon]

@zulfi984 Push it to GitHub and leave link here

[krakxn]

@alymurtazamemon Cannot seem to find the issue, could you look into it?

@zulfi984 I removed a redundant line of code by the way, you should merge the PR.

[alymurtazamemon]

@krakxn I will look at it.

[alymurtazamemon]

@zulfi984 going to do a pull request check that on your repo.

ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"]

This line was the issue before deploy. You were trying to get the priceFeed address of the local chain id that we do not have.

[zulfi984]

cool. Actually, I found another thing.
when i give

yarn hardhat deploy

it deploys all 2 files successfully. But, when i try to deploy 01-deploy-fund-me using tags, it shows error.

 yarn hardhat deploy --tags fundme

Nothing to compile
An unexpected error occurred:

Error: ERROR processing /home/zulfi984/hardhat-fund-me/deploy/01-deploy-fund-me.js:
Error: No deployment found for: MockV3Aggregator

[alymurtazamemon]

@zulfi984 Yes because you did not specify the network so it uses hardhat network (default) and in 01-deploy-fund-me.js for hardhat chainId it required mock contract that it did find and throw the error.

[icanci]

The reason for the error in running yarn hardhat deploy -- tags fundme here is that the mock 00-deploy-mocks.js was not executed, resulting in the absence of a MockV3Eggregator in this deployment process. Therefore, we can use yarn hardhat deploy to deploy Alternatively, use yarn hardhat deploy -- tags all

[icanci]

when you running the mocks, it is by the order of file name. so first run is 00-deploy-mocks.js and next is 01-deploy-fund-me.js.