TypeError：無法讀取未定義的屬性“長度”-使用安全帽進行部署時

Question

嘗試在安全帽開發鏈上部署模擬合約時出現以下錯誤。

我正在關注：

通過 JavaScript 學習區塊鏈、Solidity 和全棧 Web3 開發 – Patrick Collins 在 FreeCodeCamp YT 頻道上的 32 小時課程

我在上述課程的 10:48:53 時收到此錯誤。 我幾乎嘗試了所有事情，但沒有任何幫助，但我找到了問題所在。

問：我認為問題出在哪里？ (12:26)

據我說，問題出在我們試圖部署腳本的那一行，我們正在等待返回 promise。

這是錯誤：

Error: ERROR processing /Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/deploy/00-deploy-mocks.js:
TypeError: Cannot read property 'length' of undefined
    at getFrom (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/helpers.ts:1713:14)
    at _deploy (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/helpers.ts:533:9)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
    at _deployOne (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/helpers.ts:1004:16)
    at Object.module.exports [as func] (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/deploy/00-deploy-mocks.js:12:26)
    at DeploymentsManager.executeDeployScripts (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1219:22)
    at DeploymentsManager.runDeploy (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1052:5)
    at SimpleTaskDefinition.action (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/index.ts:438:5)
    at Environment._runTaskDefinition (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat/src/internal/core/runtime-environment.ts:219:14)
    at Environment.run (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat/src/internal/core/runtime-environment.ts:131:14)
    at DeploymentsManager.executeDeployScripts (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1222:19)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
    at DeploymentsManager.runDeploy (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1052:5)
    at SimpleTaskDefinition.action (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/index.ts:438:5)
    at Environment._runTaskDefinition (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat/src/internal/core/runtime-environment.ts:219:14)
    at Environment.run (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat/src/internal/core/runtime-environment.ts:131:14)
    at SimpleTaskDefinition.action (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/index.ts:584:32)
    at Environment._runTaskDefinition (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat/src/internal/core/runtime-environment.ts:219:14)
    at Environment.run (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat/src/internal/core/runtime-environment.ts:131:14)
    at SimpleTaskDefinition.action (/Users/rishavsharma/Documents/working/Web Dev/Blockchain/Freecodecamp/solidity&Block/blockchain-with-js/buyMeACoffee-dapp/node_modules/hardhat-deploy/src/index.ts:669:5)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
rishavsharma@Rishavs-Air buyMeACoffee-dapp % 

這是我收到錯誤的代碼片段：

const { network } = require("hardhat");
const { developmentChains, DECIMALS, INITIAL_ANSWER } = require("../helper-hardhat-config");

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


    if (chainId == 31337) {
        console.log("Development network detected! Deploying mocks...");
        const feedMock = await deploy("MockV3Aggregator", {
            contract: "MockV3Aggregator",
            from: deployer,
            log: true,
            args: [DECIMALS, INITIAL_ANSWER],
        });
        log("Price Feed Mock deployed!");
        log("==============================================");
    }
} 
module.exports.tags = ["all", "mocks"];

請幫我解決這個問題我在 Ethereum Stack Exchange 上發布了這個問題，但沒有得到任何幫助。

系統配置：MacBook Air M1 2021 - Monterey 12.4，yarn：1.22.18，Hardhat：2.9.6

Answer 1

我從 MASTER 本人那里得到了答案，@PatrickAlphaC。

當我們在上面的代碼中調用 await getNamedAccounts 時，hardhat 在我們的 hardhat.config.js 中查找命名賬戶的長度

我們必須確保下面給出的屬性在那里！

namedAccounts: {
    deployer: {
        default: 0, // here this will by default take the first account as deployer
    },
},

這解決了我的問題，我又開心了！

Answer 2

確保在getNamedAccount () 中有 await。 名稱也必須正確。

命名帳戶必須具有正確的條目，如下所示：

namedAccounts：{部署者：{默認值：0，部署者1：0，}，}，

Answer 3

我也被這個問題困住了一段時間，並且也在遵循同樣的過程。

Cannot read properties of undefined (reading 'length')
at getFrom (/Users/ilima/hh-fcc/hardhat-fundme-fcc/node_modules/hardhat-deploy/src/helpers.ts:1713:14)
at _deploy (/Users/ilima/hh-fcc/hardhat-fundme-fcc/node_modules/hardhat-deploy/src/helpers.ts:533:9)

最初我是從頭開始寫的，一直收到這個錯誤，加上安全帽 npm 安裝。 我決定測試以防萬一課程代碼，所以我克隆了存儲庫，令人驚訝的是，我還在為安全帽和華夫餅的 npm 安裝問題而苦苦掙扎。

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: hardhat-project@undefined
npm ERR! Found: @nomiclabs/hardhat-ethers@0.3.0-beta.13
npm ERR! node_modules/@nomiclabs/hardhat-ethers
npm ERR!   dev @nomiclabs/hardhat-ethers@"npm:hardhat-deploy- ethers@^0.3.0-beta.13" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer @nomiclabs/hardhat-ethers@"^2.0.0" from @nomiclabs/hardhat-waffle@2.0.2
npm ERR! node_modules/@nomiclabs/hardhat-waffle
npm ERR!   dev @nomiclabs/hardhat-waffle@"^2.0.2" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.

所以通過覆蓋它來修復依賴hardhat-ethers，為我解決了所有問題，所以試試這個：

"devDependencies": {
  ...
   "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",
  ...
 },
 "overrides": {
    "@nomiclabs/hardhat-waffle": {
    "@nomiclabs/hardhat-ethers": "$@nomiclabs/hardhat-ethers"
  }
 }

我從安裝建議中斷@nomiclabs/hardhat-waffle得到解決方案

現在，我注意到您已經解決了您的問題，但我也想添加我的解決方案，以防萬一其他人在終端中未定義部署而苦苦掙扎。 在我的情況下， namedAccounts和await getNamedAccount()很好。