Error: Cannot find module '/opt/render/project/src/start

My package.json file is
“name”: “mern”,
“version”: “1.0.0”,
“description”: “”,
“main”: “index.js”,
“type”: “module”,
“scripts”: {
“dev”: “nodemon api/index.js”,
“start”: “node api/index.js”,
“build”: “npm install && npm install --prefix client && npm run build --prefix client”
“keywords”: ,
“author”: “”,
“license”: “ISC”,
“dependencies”: {
“bcryptjs”: “^2.4.3”,
“cookie-parser”: “^1.4.6”,
“dotenv”: “^16.4.5”,
“express”: “^4.18.2”,
“jsonwebtoken”: “^9.0.2”,
“mongoose”: “^8.2.0”,
“nodemon”: “^3.0.3”

and index.js file
import express from ‘express’;

import mongoose from ‘mongoose’;

import dotenv from ‘dotenv’;

import userRouter from ‘./routes/user.route.js’;

import authRouter from ‘./routes/auth.route.js’;

import listingRouter from ‘./routes/listing.route.js’;

import cookieParser from ‘cookie-parser’;

import path from ‘path’;


mongoose.connect(process.env.MONGO).then(() => {

console.log(‘connected to mongoDB’);

}).catch((err) => {



const __dirname = path.resolve();

const app = express();



app.listen(3000, () => {

console.log(‘Server is running on port 3000!:rocket:’);


app.use(“/api/user”, userRouter);

app.use(“/api/auth”, authRouter);

app.use(‘/api/listing’, listingRouter);

app.use(express.static(path.join(__dirname, ‘/client/dist’)));

app.get(‘*’, (req, res) => {

res.sendFile(path.join(__dirname, ‘client’, ‘dist’, ‘index.html’));


app.use((err, req, res, next) => {

const statusCode = err.statusCode || 500;

const message = err.message || ‘Internal Server Error’;

return res.status(statusCode).json({

success: false,






The package.json shows your start script is node api/index.js.

The error message looks like you may be running node start as your Start Command, so that Node is looking for a start.js file. Maybe you’re confusing that with npm start?

Or just set the Start Command to node api/index.js


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