Why Uniswap V2's function getPair() is returning a null address

Question

I'm trying to get the pair address if the USDC / USDT pair on uniswap using the v2 core. The pair address exists on uniswap but when i run the code it returns me a null address (0x0000000000000000000000000000000000000000). Im using the goerli testnet

The main file

const IUniswapV2Pair = require("@uniswap/v2-core/build/IUniswapV2Pair.json");
const IERC20 = require("@openzeppelin/contracts/build/contracts/ERC20.json");
const { provider, uFactory } = require("./config");
const ethers = require("ethers");

let tokenA, tokenB;
const getTokenAndContract = async (
  _tokenAAddress,
  _tokenBAddress,
  _provider
) => {
  const tokenAcontract = new ethers.Contract(
    _tokenAAddress,
    IERC20.abi,
    _provider
  );
  const tokenBcontract = new ethers.Contract(
    _tokenBAddress,
    IERC20.abi,
    _provider
  );

  tokenA = {
    address: _tokenAAddress,
    decimals: 18,
  };

  tokenB = {
    address: _tokenBAddress,
    decimals: 18,
  };
};

const tokensAndContract = getTokenAndContract(
  process.env.TOKEN_A,
  process.env.TOKEN_B,
  provider
);

const main = async () => {
  const pairAddress = await uFactory.getPair(tokenA.address, tokenB.address);
  console.log(pairAddress); // output = 0x0000000000000000000000000000000000000000
};

main();

the config file

const IUniswapV2Factory = require("@uniswap/v2-core/build/IUniswapV2Factory.json");
const hre = require("hardhat");

let provider;

provider = new hre.ethers.providers.WebSocketProvider(
  `wss://eth-goerli.g.alchemy.com/v2/${process.env.ALCHEMY_API_KEY}`
);

console.log("uFactory");
const uFactory = new hre.ethers.Contract(
// the address is 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f
  process.env.UNISWAP_FACTORY_ADDRESS,
  IUniswapV2Factory.abi,
  provider
);


module.exports = { provider, uFactory };

Is my code wrong?

I looked up the uniswap docs and i followed it and checked that the pair with the 2 addresses existed but it kept returning me 0x0000000000000000000000000000000000000000.