I get an error anytime I run node deploy.js on this code

[CaptSinBad]

This is my code

const ethers = require("ethers");
const fs = require("fs-extra");

async function main() {
  const provider = new ethers.providers.JsonRpcProvider(
    "http://172.20.48.1:7545"
  );
  const Wallet = new ethers.Wallet(
    "privateKey",
    provider
  );
  const abi = fs.readFileSync("./SimpleStorage_sol_SimpleStorage.abi", "utf8");
  const binary = fs.readFileSync(
    "./SimpleStorage_sol_SimpleStorage.bin",
    "utf8"
  );
  const contractFactory = new ethers.contractFactory(abi, binrary, wallet);
  console.log("Deploying...please wait");
  const contract = await contractFactory.deploy();
  console.log(contract);
}

main()
  .then(() => ProcessingInstruction.exit(0))
  .catch((error) => {
    console.error(error);
    process.exit(1);
  });

this is the error I get:

  throw err;
  ^

Error: Cannot find module 'ethers'
Require stack:
- /home/nerdynedo/new_folder/hh-fcc/ethers-simple-storage/deploy.js
    at Function.Module._resolveFilename (node:internal/modules/cjs/loader:933:15)
    at Function.Module._load (node:internal/modules/cjs/loader:778:27)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (/home/nerdynedo/new_folder/hh-fcc/ethers-simple-storage/deploy.js:1:16)
    at Module._compile (node:internal/modules/cjs/loader:1103:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1157:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:77:12) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/home/nerdynedo/new_folder/hh-fcc/ethers-simple-storage/deploy.js'
  ]
}

[CaptSinBad]

I had to re-download ethers using yarn add ethers