Lesson 6 network.config.chainID using Goerli testnet

[navillanueva]

To anyone using the goerli testnet network instead of the rinkeby one, like in the video, you might come across this error.

When executing:

network.config.chainId

If you console.log this value it will return undefined, where it should actually return 420

I was using goerli testnet since in alchemy it states that the rinkeby testnet will be deprecated soon due to the Ethereum merge.

I am unaware as to why it returns undefined. My guess is that the goerli testnet may not be added to hardhat yet, but i dont know why it doesn´t get the chainId value stated in the hardhat.config.js file. But i would like to know exactly why this occurs.

To fix this just use the Rinkeby testnet and then the network.config.chainId value will return 4