https://defi-quanterall-group.herokuapp.com/
First connect your wallet to the Goerli testnet from the "Connect Wallet" button.
In order to use marketplace nft's :)
https://github.com/DeFi-Group1/nft-mint-final-assigment/blob/main/contracts/NFTMarketplace.sol
Create .env file from .env-example with your Goerli private key to deploy the contract.
Deploying new marketplace with this command:
npx hardhat run --network goerli scripts/deploy.js
npm run build
npm start