return failure(new Error('secretOrPrivateKey must have a value'));enter image description here
I think your application is not able to read the environnement variables.
I advice you to use the package dotenv
: https://github.com/motdotla/dotenv
After installing it you have to import it at the top of your application like this:
require("dotenv").config();
Specify a file .env
at the root of your application and add your variables
JWT_SECRET=12bob12ou2b1ob
NODE_ENV=development
After, you can use the variables like you did in your linked image:
const jwtSecret = process.env.JWT_SECRET