Lesson 7 : TypeError: Cannot read properties of undefined (reading 'length')

[usman-2000]

yarn run v1.22.19
warning package.json: No license field
$ /home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/.bin/hardhat deploy
Nothing to compile
Local networks detected! deploying mocks
deploying "MockV3Aggregator" (tx: 0x3d732abdeda8235691578f5eae48ec57c18e6860c18196ab7b211ca8f74dce2b)...: deployed at 0x5FbDB2315678afecb367f032d93F642f64180aa3 with 569759 gas
Mocks deployed

An unexpected error occurred:

Error: ERROR processing /home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/deploy/01-deploy-fund-me.js:
TypeError: Cannot read properties of undefined (reading 'length')
at getFrom (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat-deploy/src/helpers.ts:1726:14)
at _deploy (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat-deploy/src/helpers.ts:534:9)
at processTicksAndRejections (node:internal/process/task_queues:95:5)
at runNextTicks (node:internal/process/task_queues:64:3)
at listOnTimeout (node:internal/timers:533:9)
at processTimers (node:internal/timers:507:7)
at _deployOne (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat-deploy/src/helpers.ts:1004:16)
at Object.module.exports [as func] (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/deploy/01-deploy-fund-me.js:41:18)
at DeploymentsManager.executeDeployScripts (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1222:22)
at DeploymentsManager.runDeploy (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1055:5)
at DeploymentsManager.executeDeployScripts (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1225:19)
at processTicksAndRejections (node:internal/process/task_queues:95:5)
at runNextTicks (node:internal/process/task_queues:64:3)
at listOnTimeout (node:internal/timers:533:9)
at processTimers (node:internal/timers:507:7)
at DeploymentsManager.runDeploy (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1055:5)
at SimpleTaskDefinition.action (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat-deploy/src/index.ts:438:5)
at Environment._runTaskDefinition (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat/src/internal/core/runtime-environment.ts:330:14)
at Environment.run (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat/src/internal/core/runtime-environment.ts:163:14)
at SimpleTaskDefinition.action (/home/usman/BLOCKCHAIN-COURSE/hardhat-fund-me-fcc-create-by-own/node_modules/hardhat-deploy/src/index.ts:584:32)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Facing this error while running the command :

yarn hardhat deploy

In my code there is no property of length i used.

[alymurtazamemon]

@usman-2000 Yes you are not using the length property, but you are using the getNamedAccounts function in your deploy script which is checking for any named accounts in the hardhat.config.js file but it does not find the named accounts. Are you sure you added namedAccounts object in config file?

[usman-2000]

[usman-2000]

Are you talking about this???

[alymurtazamemon]

@usman-2000 Yes, if you have defined it then leave your repo so I can see your code. Make sure you have added await before getNamedAccounts.

[usman-2000]

Okay i am uploading it on github then i'll tell you.

[usman-2000]

Thankyou bro .. It is resolved now. I forgot getNamedAccount() to call it as a function . Thanks to @alymurtazamemon