Nginx 服务器为某些目录返回错误 502（快速应用程序）

Question

I'm running an express application using nginx web server on Ubuntu. everything works fine but today when I added two more directories using app.get method and re-deploy my app, the new directories won't work and it returns 502 Bad Gateway errors (old directoriesn are working fine). Restarting pm2, nginx and the server itself didn't help. What should I do?

Answer 1

After a couple of hours I realized that the problem was in my code and not relevant to nginx. But because of pm2 the server would not crash to help me find that out. running normal run command:

node server.js

revealed the mistake