Cannot get wallet client when using viem in hardhat

[saqlain1020]

I've setup hardhat with fireblocks keys as described in the docs. deploying contracts work well but i can't access the wallet client address in the scripts.

const [deployer] = await hre.viem.getWalletClients();

console.log(deployer) // undefined

It should've logged the deployer vault, but the value is always undefined.