I'm deploying a Node.js application to Railway and getting the following error during startup:

Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/app/src/V1/App/Seeders/index.js' imported from /app/server.js
Node.js v20.20.0

The application starts with:

> node server.js

The import in server.js is:

import './src/V1/App/Seeders/index.js'

What I already verified

• The file exists locally at:

  src/V1/App/Seeders/index.js
  

• The folder name casing matches exactly (V1, App, Seeders)

• I am using macOS locally

• I understand Linux is case-sensitive and confirmed the casing matches

• The project is plain JavaScript (not TypeScript)

• Node version in production: v20.20.0

What’s confusing

The module works locally but fails inside the Railway container with ERR_MODULE_NOT_FOUND.

Could this be:

• A case-sensitivity issue that Git didn’t track correctly?

• A file not committed?

• A .gitignore issue?

• A build vs runtime working directory issue?

Project Structure (simplified)

server.js
src/
 └── V1/
      └── App/
           └── Seeders/
                └── index.js

Any guidance would be appreciated.