"Cannot find module " despite file being available

I am trying to import my helper functions in my express app index.js. Imported it. Now it is throwing Error

[ERR_MODULE_NOT_FOUND]: Cannot find module 'F:\RnD\express-boilerplate\src\helpers\error' imported from F:\RnD\express-boilerplate\src\index.js

My index.js:

import express from "express";

import { ErrorHandler, handleError } from "./helpers/error";

const app = express();

app.get("/", (req, res) => {
  res.send("hello world");
});

app.get("/error", (req, res) => {
  throw new ErrorHandler(500, "My Bad");
});

app.use((req, res) => {
  throw new ErrorHandler(404, "Not found");
});

app.use((err, req, res, next) => {
  console.log(err.stack);
  handleError(err, res);
});

app.listen(3000, () => {
  console.log("App starting in PORT: 3000");
});

My error.js:

class ErrorHandler extends Error {
  constructor(statusCode, message) {
    super();
    this.statusCode = statusCode;
    this.message = message;
  }
}

const handleError = (err, res) => {
  const { statusCode, message } = err;
  res.status(statusCode).json({
    status: "error",
    statusCode,
    message,
  });
};

export { ErrorHandler, handleError };

I have checked location multiple times. Location is accurate. But why it is showing cannot find module?
I am using node version 19.3.0

in the 2nd line of main file make it

import { ErrorHandler, handleError } from "./helpers/error.js";

This is because of the behavior of EcmaScript, you need to specify the file extension, read more about it here nodejs.org.

Update the second line of index.js, where you are importing modules as

import { ErrorHandler, handleError } from "./helpers/error.js";