- yarn install
 - yarn add --dev hardhat (you ,might need to change ur node version: 
nvm use 16)- npx hardhat & select empty project
 
 - then run hardhat locally: npx hardhat node
 - run nextjs app: npm run dev
 
- Add the network to metamask(add the RPC)
 - Change the chainID on networkMapping.json to reflex the correct one