Lesson 9 Adding dependecies error

[armontej]

When i try to add the dependencies in the terminal using "yarn add --dev @nomiclabs/hardhat-ethers@npm:hardhat-deploy-ethers ethers @nomiclabs/hardhat-etherscan @nomiclabs/hardhat-waffle chai ethereum-waffle hardhat hardhat-contract-sizer hardhat-deploy hardhat-gas-reporter prettier prettier-plugin-solidity solhint solidity-coverage dotenv"

i run into these errors:
Error: Couldn't find package "web3-core-method@1.2.11" required by "web3-eth@1.2.11" on the "npm" registry.
Error: Couldn't find package "node-fetch@^2.6.7" required by "cross-fetch@^2.1.0" on the "npm" registry.

When i try to run it multiple times, the error changes as to what cannot be found..
Is this because of the version of hardhat im trying to use? Im not quite sure where the issue is coming from.

[armontej]

After deleting my hardhat-smartcontract-lottery-fcc about 4 times and going through the install process of hardhat and trying to install the dependencies, it just randomly worked. Is there any other way to figure out this issue other than just deleting and retrying to install hardhat and the dependecies till it works? I feel like there is a way better solution to this problem other than what i did.

[dibakarsutradhar]

@armontej the issue you ran into is most likely to be an issue with the .yarnrc or .npmrc config files of the package manager. A working solution was discussed in the official yarnpkg/yarn repo, you can find the reason why it happened and how to fix it here

Similar issue was also discussed in the StackOverFlow, you can view it from here

[armontej]

thank you if i run into this error again will try some of these solutions

[dibakarsutradhar]

Glad I could help 😁

[Maakai123]

Just try this next time, npm install --save-dev --force @nomiclabs/hardhat-waffle 'ethereum-waffle@^3.0.0' @nomiclabs/hardhat-ethers 'ethers@^5.0.0'