Error 502 is being returned by the Nginx server for specific directories within the Express Application

Currently, I have an express application running on Ubuntu with nginx as the web server. Everything was functioning correctly until today when I attempted to add two new directories using the app.get method and re-deployed my app. Unfortunately, the new directories are not working and instead, I am encountering 502 Bad Gateway errors (the old directories continue to work properly). I have tried restarting pm2, nginx, and the server itself but it did not resolve the issue. Any suggestions on what steps I should take next?

node.jsexpressubuntunginxpm2

Answer №1

It took me a few hours to figure out that the issue was actually in my code and not related to nginx. Luckily, with pm2 running on the server, it didn't crash and helped me uncover the mistake. Here is the command I ran to diagnose the problem:

node server.js

And that's how I finally discovered the error.

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