Cannot find module 'express'

Tell us what’s happening:

Advanced Node and Express - Use a Template Engine’s Powers

Pls help i could not proceed with the project. It throws error- cannot find module ‘express’.
link: https://repl.it/@TosinFamoroti/boilerplate-advancednode-2#server.js

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User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.48 Safari/537.36.

Challenge: Use a Template Engine’s Powers

Link to the challenge:

Run
npm i
in console

I had the same problem and this fixed the issue for me. What does it do? Thanks!

I know this was months ago, but still:
npm i should install the dependencies that we added in by hand. We wrote them into our package.json, but they were not installed automatically.