Need More Details to Help You:Project Setup:Is this a Node.js Express app?What authentication library are you using? (JWT, Passport, Auth0, Firebase Auth, etc.)Which specific packages for auth? (jsonwebtoken, passport-jwt, bcrypt, etc.)Configuration:Do you have CORS configured? What origins are allowed?Are you using middleware like helmet or security headers?What's your auth flow? (Bearer tokens, cookies, sessions?)Testing Method:Are you testing with an API tool (Postman, Insomnia, curl) or through your frontend?If frontend: are you getting CORS errors in browser console?Environment Variables:Which env vars are you sending to Railway?Any database connection strings, JWT secrets, API keys?Did you restart/redeploy the app after updating environment variables?Error Details:What specific 4XX error code? (401, 403, 422?)Any error messages in Railway logs?Does the auth endpoint respond at all, or complete timeout?Recent Changes:Did you update any dependencies recently?Any Railway configuration changes?When exactly did it stop working?Share your package.json auth dependencies and Railway environment variable names (not values) - this will help pinpoint the issue quickly.

Can you try removing that devDependencies section from the package.json, and try redeploying it again. Also, have you added a "healthcheckup endpoint" for your non-dev environment? If not, then please refer to this post: https://docs.railway.com/guides/healthchecks#configure-the-healthcheck-port and do let me know whether the build process is successful or not?

Project Setup:Is this a Node.js Express app? YesWhat authentication library are you using? (JWT, Passport, Auth0, Firebase Auth, etc.) JWT TokenWhich specific packages for auth? (jsonwebtoken, passport-jwt, bcrypt, etc.) passport-jwtConfiguration:Do you have CORS configured? What origins are allowed? All CORS are configured, none the less we have Back and Front under the same DNSAre you using middleware like helmet or security headers? MiddlewaresWhat's your auth flow? (Bearer tokens, cookies, sessions?) CookiesTesting Method:Are you testing with an API tool (Postman, Insomnia, curl) or through your frontend? Postman and Fiddler ClassicIf frontend: are you getting CORS errors in browser console? NoEnvironment Variables:Which env vars are you sending to Railway? JWT Keys, and DB ConnectionAny database connection strings, JWT secrets, API keys? YesDid you restart/redeploy the app after updating environment variables? YesError Details:What specific 4XX error code? (401, 403, 422?) 401 Unathorized-Side-Bar--> We have tested the code in a developer enviroment it still works. We notice that on the dev-env a cookie with the passport toke is created but in railway production it does not get created. We deployed the code again in to another project in railways and tested it via Postman we get the same result 401 Unathorized.Side-Bar2--> This projects connects to MongoDB "hosted in Mongo" we had a little "disagreement" with them regarding the account and it got suspended. However we settle the "disagreement" and the account got restored. We tested the application on friday 18 and everything was up and running. The back end does respond it connects to the DB. On the dev-env the code connects and works properly.Any error messages in Railway logs? Yes but it worked before inspite of errorsDoes the auth endpoint respond at all, or complete timeout? It does answer backRecent Changes:Did you update any dependencies recently? NoAny Railway configuration changes? NoWhen exactly did it stop working? This past tuesday.Share your package.json auth dependencies and Railway environment variable names (not values) - this will help pinpoint the issue quickly.{ "name": "@sie/backend", "version": "0.0.0", "author": "Gabriel Aguilar <gavarela90@gmail.com>", "scripts": { "dev": "nodemon --env-file=.env --env-file=.env src/index.js", "seed": "node --env-file=.env seed.js", "start": "node src/index.js", "lint": "eslint .", "lint:fix": "eslint --fix .", "format": "prettier --write ." }, "dependencies": { "@koa/cors": "^4.0.0", "@sie/common": "^0.0.0", "bcrypt": "^5.1.1", "common": "file:../common", "json-2-csv": "^5.0.1", "jsonwebtoken": "^9.0.2", "koa": "^2.14.2", "koa-bodyparser": "^4.4.1", "koa-helmet": "^7.0.2", "koa-morgan": "^1.0.1", "koa-passport": "^6.0.0", "koa-ratelimit": "^5.1.0", "koa-router": "^12.0.1", "mongoose": "^8.0.2", "morgan": "^1.10.0", "passport": "^0.7.0", "passport-jwt": "^4.0.1", "passport-local": "^1.0.0" }, "devDependencies": { "nodemon": "^3.0.2" } }