message: Add default empty account to hardhat config to avoid it erroring
diff: @@ -25,6 +25,8 @@ import 'hardhat-gas-reporter'
  dotenv.config()
  const enableGasReport = !!process.env.ENABLE_GAS_REPORT
  +const privateKey = process.env.PRIVATE_KEY ||
  + "0x0000000000000000000000000000000000000000000000000000000000000000"; // this is to avoid hardhat error
  const config: HardhatUserConfig = {
  networks: {
  @@ -45,17 +47,17 @@ const config: HardhatUserConfig = {
  'optimism-kovan': {
  chainId: 69,
  url: 'https://kovan.optimism.io',
  - accounts: [process.env.PRIVATE_KEY],
  + accounts: [privateKey],
  gasPrice: 15000000,
  ovm: true,
  },
  'optimism-mainnet': {
  chainId: 10,
  url: 'https://mainnet.optimism.io',
  - accounts: [process.env.PRIVATE_KEY],
  + accounts: [privateKey],
  gasPrice: 15000000,
  ovm: true,
  - }
  + },
  },
  mocha: {
  timeout: 50000,
  