TypeError: Cannot read properties of undefined (reading 'ethUsdPriceFeed')

[waleedcj]

line of code which is giving me an error

The Code I want to run

output on console

config file where I want to extract the testnet Address from respected to the chianID

I have replaced the extracting of the address from the config file to the Rinkeby price feed address and can run and deploy
the fundMe contract smoothly

Also please leave comments on the question formatting I tried following Patrick's format thanks

Edit: The chainId is somehow undefined, and that's why it cannot go into the object, but don't we mention the chainId in the hardhat.config.js?

[technophile-04]

line of code which is giving me an error

It should be :
ethUsdPriceFeedAdress = networkConfig[chainId][ethUsdPriceFeed]

---

console.log("This is chainId" + chainId)

could please share where this chainId variable you are getting from ?

[waleedcj]

I changed it too

ethUsdPriceFeedAdress = networkConfig[4]["ethUsdPriceFeed"];

it works because the rinkeby testnet chainId is 4 but I don't want to change my chainId every time I want to change a testnetwork

I get my chainId from here

yarn hardhat deploy --network rinkeby

[technophile-04]

Instead of using only chainId try using network.chainId you don't get chainId directly its present in network object so try using network.chainId

[waleedcj]

change const {chainId} = network.config.chainId; **TO** const chainId = network.config.chainId;