Running on your computer

“Module not found” after pulling changes

What you see
After a pull or switching branch, the app fails with Module not found or Cannot find module.
Why it happens
The project now uses a package that isn't installed on your computer yet.
How to fix it
  1. Ask your agent to run npm install.
  2. Start the app again.

Message for your agent

I get “Module not found”. Run npm install, restart the app and tell me which package was missing and why we need it.

Tip

How to prevent it: After every pull, your agent installs dependencies if they changed.

Still stuck?Report it to your agent, clearly

Hands-on test on Mac and Windows pending · Last reviewed Nov 8, 2026