Deploy errors (Mongo+Express)

Hi!
I am new in the deploying process and I am getting errors while deploying my app


starting with node app.js

Hey,

It seems you’ve set ‘npm start’ as the ‘build command’ for your static service. The build command isn’t supposed to start a server. Instead, it’s meant for preparing, installing, and building dependencies. You might want to use ‘npm install && npm run build’ or something similar that suits your project, but definitely not ‘npm start’.

Jérémy.
Render Support, UTC+3