Please provide more details as "does not work" unfortunately doesn't give enough information.

the return should be {ping: pong}, but nothing

That page is absolutely not nothing?

Please read this docs page -

https://docs.railway.app/guides/fixing-common-errors

This service has other routes, I created this simple get, just for testing.
I already checked this and nothing

Are you committing your .env file to GitHub?

No, but I configured the env here.

https://github.com/lucasgomesoficial/atividade2-FullSttacking/tree/master/server

Please attach your deployment logs -

https://bookmarklets.up.railway.app/log-downloader/

I don't understand, I don't know this tool, add it to the browser's fav, what now?

Please follow the 3 steps.

Dude, I'm sorry for my limitation, but I couldn't understand, step 2, where is it to open? You talked about the log, follow the print of the log

The screenshot is sufficient.

You should never use a file watcher when on Railway and especially not try to load a .env file.

Please add a proper start script to your package.json and remove the dev command from within your service settings.

Would it be correct?

"dev": "tsx api/index.ts"

in prod, without passing the flag --env-file=.env will you understand how env's?

in the image as it is at the moment

As previously mentioned, you need to add a start script and what you have just sent would be sufficient for the start script, you don't need to touch the dev script at all in your package.json

Once you have a start script, remove your custom start command from your Railway service.

in prod, without passing the flag --env-file=.env will you understand how env's?

You would set all your environmental variables in the service variables tab for your service, those then become available in the environment.

I did it this way:

"scripts": {
"dev": "tsx watch --env-file=.env api/index.ts",
"start": "tsx api/index.ts"
},

and changed the Custom Start Command to:
npm run start

I tried without too

and it still doesn't work

/app/api/prisma/index.ts:1

import { PrismaClient } from "@prisma/client";

^

SyntaxError: The requested module '@prisma/client' does not provide an export named 'PrismaClient'

at ModuleJob.instantiate (node:internal/modules/esm/modulejob:124:21)

at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

at async ModuleJob.run (node:internal/modules/esm/module_job:190:5)

Node.js v18.18.2

now it is giving this error and it is crashing

WTF

What version of node do you use locally?

v20.9.0

In your package.json set engines.node to 20

I set the node version

"engines": {
"node": "20.9.0"
},
"scripts": {
"dev": "tsx watch --env-file=.env api/index.ts",
"build": "tsup api --format esm",
"start": "node dist/index.js"
},

I added the tsup library to transpile to JS

even did the deploy, but it just crashed

Please attach your deployment logs -

https://bookmarklets.up.railway.app/log-downloader/

Dude, I managed to do it, after these changes, all I had to do was go through the custom build command npx prisma generate, which I hadn't done before.

Thank you very much for your attention, all the best to you