I encountered an `Error: Cannot find module 'react'` error when running `next dev` while setting up vercel/postgres

Question

I'm trying to create a table in @vercel/postgres database. The Quick Start Guide document at the link below shows how to create the table and states that you need to run the next dev command. But on the terminal I get the following response:

Cannot find module 'react'. Next.js requires you to include it in 'dependencies' in 'package.json'

throw err; ^

Error: module 'react' not found ... code: 'MODULE_NOT_FOUND',*

I have installed react and react-dom in my package.json file.

I tried deleting node_modules and package_lock.json and then running npm install, but the problem is still not resolved. I'm using node.js version 18.17.1.

Can anyone help?

Answer 1

Check your package.json file. If all your libraries are installed, try clearing the cache:

npm cache clean --force

Then install the dependencies using the following command:

npm i

Then it should run